High-power fibre Raman lasers at the University of Southampton

Size: px
Start display at page:

Download "High-power fibre Raman lasers at the University of Southampton"

Transcription

1 High-power fibre Raman lasers at the University of Southampton Industry Day Southampton, April Johan Nilsson Optoelectronics Research Centre University of Southampton, England Also consultant to SPI Lasers, Southampton, England jn@orc.soton.ac.uk

2 New high power laser technology for New Wavelengths 2

3 Acknowledgements Co-workers Tianfu Yao Harish Achar Vasant Jayanta Sahu Morten Ibsen Christophe Codemard (SPI Lasers) Junhua Ji (now at ESI, Singapore) Carl Farrell (now at Heriot Watt university) Akira Shirakawa (now at University of Electro-Communications, Japan) Funding EPSRC AFOSR Industrial 3

4 All fibres made in Southampton (almost) Large core / large mode area Multi-core ribbon - Scalable!! Micro-structured holey fibre Air core Helical core fibre Circular birefringence Filtering Air clad High pump-na Photonic bandgap Delivery, pulse compression, gas-filled devices Birefringent (stress) Multi-core 4 53

5 What is a fibre Raman laser? It s a fibre laser! (Or amplifier) See one in P4009! Very Simple! Gain through stimulated Raman scattering (SRS) Inelastic scattering process Not stimulated emission No excited state No energy storage Instantaneous gain (no build-up time) Gain peaks ~13.2 THz or 440 cm 1 below pump frequency in silica 1030 nm pump 1080 nm signal Raman gain spectrum in silica fibres (R. H. Stolen and E. P. Ippen, Appl. Phys. Lett. 22, 276, 1973) SRS is relatively weak Still substantial at high power The higher power the better!!? 5

6 Why fibre Raman lasers? Brightness enhancement / beam cleanup Multimode pump single-mode output Power density on target determined by brightness rather than to power 6

7 Why fibre Raman lasers? Power scalable Pump flexibility -- not necessary to specify pump wavelength Pump with Yb-doped fibre lasers or any other laser Quantum defect < 5% with 1060 nm pumping Low thermal load Freedom in material (no need for rare earth doping) Better control of refractive index profile Very low loss materials Photo-darkening readily avoided 7

8 100 W cladding-pumped Raman fibre 1120 nm Output Power [W] Laser Pump Through Fit =71% HR 85 m DCRF LF11 Flat Cleave 4% reflection 200 W ISO 6% loss Pump Dump POWER METER > 1090 nm <1090 nm Launched Pump Power [W] Slope efficiency 71% Power conversion efficiency 62.5% M 2 = 1.6 Scalable to multi-kw-level!! 1064 nm Fibre source 200 W C. A. Codemard, J. Ji, J. K. Sahu, and J. Nilsson, 100 W CW cladding-pumped Raman fiber laser at 1120 nm, in Fiber lasers VII: technology, systems, and applications, Proc. SPIE vol. 7580, pp N (2010)

9 Why fibre Raman lasers? Instantaneous gain with no stored energy Not good for generating pulses Can be used to convert pulses Brightness enhancement Wavelength Temporal gain shaping Modulated gain at > 60 db Quasi-uni-directional gain in pulsed regime Eliminates need for isolator 9

10 Why fibre Raman lasers? Wavelength agile Stimulated Raman scattering is wavelength-agile New high-power wavelengths Limited only by transparency range of silica Yb Nd Silica Fiber Material Loss and some Rare-earth emission bands Nd Raman Er Tm Ho Background Loss [db/km] Especially attractive to combine with wavelength-agile pump diode technology Emission wavelength determined by pump wavelength Wavelength [nm] Into the mid-infrared with non-silica glasses! 10

11 Near-diffraction-limited supercontinuum generation in a cladding-pumped nonlinear fibre converter J. Ji, C. A. Codemard, A. S. Webb, J. K. Sahu, and J. Nilsson Conf. On Lasers and Electro-Optics (CLEO 2010) San Jose, USA, May 16-21, 2010, paper CMMM5 Very simple high-power supercontinuum generation Scalable to very high powers (?)

12 Simple setup DM: dichroic mirror. nm, >1116 nm. DM Supercontinuum Lens 100 m DC fibre Residual pump DM Lens Isolator DM Lens Raman seed: ensures beam quality shortens fibre length Raman 1064 nm Raman 1112 nm Nanosecond pump: cheap, easily built, long dispersion length Raman pump Raman seed DC fibre 1064 nm Pulsed 30 ns / 150 khz Multimode M 2 ~3.2 Launching efficiency >89% Power varied Diffraction Launching 1112 nm cw 88 mw limited efficiency >92% 20 mm diameter, 0.06 NA core / 50 mm diameter, 0.2 NA inner cladding ~ 0.24 db background loss over 100 m at 1 mm

13 Simple fibre n (x10-4 ) Fabricated in house Core diameter 20 mm, NA ~ Compatible with kw of output power Cut-off wavelength ~1567 nm Inner cladding diameter 50 mm, NA ~ Radius [ m] 13

14 Supercontinuum spectrum Power [mw/nm] kw, 100 m kw, 700 m Wavelength [nm] Power density: 40 mw/nm for the 100 m long fibre around 1400 nm For the 700 m long fibre, the spectrum is very flat; power density is between 0.1 mw/nm and 10 mw/nm over large range Significant anti-stokes for 700 m fibre With highest pump peak power and 100 m and 700 m long fibres Wavelength [nm] 8.05 kw Background noise Power [dbm] OSA uncalibrated in this region

15 Supercontinuum power Average output power vs. launched average pump power (100 m long fibre) Ouput power [W] Output power Output power excluding residual pump Launched pump power [W] Highest conversion efficiency is 75% at 20.4 W of launched pump power Pump launch efficiency 89% Remaining pump ~ 2 W in core & inner cladding

16 Raman amplifier with ultra-broad reconfigurable gain spectrum through cascaded Raman conversion Raman amplifier pumped by diode-seeded Yb-doped fibre MOPA Rectangular pulses of variable height allows for broad and reconfigurable Raman gain spectrum Cascaded Raman conversion Gain across 3 Stokes orders 14 Flat gain possible! 13 1st 2nd 3rd On/off gain (db) Wavelength (nm) 0% 30% 60% 90% 12.6 db on/off gain at 1116 nm 13 db on/off gain at 1172 nm Carl Farrell, Christophe A. Codemard, and Johan Nilsson, "Spectral gain control using shaped pump pulses in a counterpumped cascaded fiber Raman amplifier," Opt. Express 18, (2010) 11.6 db on/off gain at 1235 nm

17 High power, high efficiency fibre Raman laser pumped by multimode laser diodes at 975 nm Advanced Solid State Lasers, Paris, Oct , ATu1A.4 Tianfu Yao and Johan Nilsson Optoelectronics Research Centre, University of Southampton, England Two fibres: GRIN (MM) Double-clad

18 Direct diode pumping Very simple 18

19 Directly diode-pumped Raman laser cavity setup f= 20 mm HR 975 nm DM 1 f= 11 mm f= 8 mm DM 2 f= 20 mm VBG Graded-index multimode fiber Laser 1019 nm Diagnostics Power meter & optical spectrum analyzer Outcoupling end: feedback from 4% reflecting perpendicular cleave Far end of fibre: DM 2: HR for both pump & Stokes (but not second Stokes) 80% launch back efficiency Total signal roundtrip loss: 19.5 db for 3 km fibre; 17.3 db for 1.5 km fibre 19

20 Total power (W) Results, 3 & 1.5 km GRIN MM Relative power (dbm) 975 nm Diode pumped Raman output 2D Graph km Resolution: 2 nm Total output (W) Relative power (dbm) Launched pump power (W) Launched pump power (W) Results: Signal wavelength 1019 nm, QD ~ 4.3% Slope efficiency increases for shorter fibre length: 80% Slightly higher threshold: 19 W Record output power: 20 W M 2 = Wavelength (nm) Wavelength (nm) Col 1 vs Col 2 20

21 2D Graph 3 GRIN MM fibre Raman gain fibre Normalised refractive index, a.u Normalised index step Delta n 1.2 DCRF (preform RIP) L Preform Refractive Index Profile Radius (um) (µm) fibre Col 1 vs Col 2 1. OFS OM-4 GRIN MM Core (cladding) (Ge-doped silica) 62.5 µm diameter NA 2. ORC DCRF 14.6 (38) µm diameter 0.1 (0.3) NA Preform Radius (mm) fibre length Background loss 3 km/ 1.5 km nm nm 0.65 km 7.5 nm 6.9 nm 21

22 Output power (W) Relative power (dbm) Laser output (W) Results, 0.65 km DCRF Fibre pump launch end laser power f = 0.19*(x-33) Launched pump Pump power (W) (W) Results: M 2 = 1.9 Record output power: 6 W Total launched pump power (W) vs Laser output 1(W) Relative power level (dbm) Pump launch end spectrum Wavelength(nm) Col 5 vs Col 6 Slope efficiency 19%; Threshold: 33 W First fibre Raman laser cladding-pumped directly by diodes Efficiency limited by high background loss Resolution: 2 nm 22

23 Operation down towards 800 nm possible 835 nm fibre Raman laser pulse-pumped by a MM laser diode -30 Relative power level (dbm) Wavelength (nm) Tianfu Yao and Johan Nilsson, Short-wavelength fiber Raman laser pulsepumped by multimode laser diode at 806 nm, SOF Topical Meeting Colorado USA June

24 More to come! Power scaling kw-level with direct diode-pumping Multi-kW with solid-state laser pumping ( tandem-pumping ) New wavelengths From 800 nm to beyond 2000 nm Control of competing nonlinearities 24

25 Signal power (mw) 60 SBS suppression in Raman amplifier dither : 300 mv, Pump Modulation 260 MHz dither : 300 mv, No pump Modulation 260 MHz Enables sub-ghz linewidth Input pump (mw) Proof-of-principle investigations at low power 25

26 Summary Fibre Raman lasers will allow Record-breaking power levels Multi-kW New wavelengths New operating regimes with new types of control Direct diode-pumping particularly attractive Efficiency Simplicity Wavelength coverage Improvements in diodes and fibres This field will move forward rapidly Lots of opportunities! 26

27 Pump sources for high-power laser work Well over 10 kw of diode pump power available across ORC Mostly 9xx nm, ~ nm for Tm-pumping Up to nm can be deployed in single setup We also have a 4 kw, 1030 nm Yb:YAG disk laser (Trumpf) 27

28 4 kw TRUMPF disk laser facility 1030 nm, M 2 ~ 10 Laser pumping Raman, Yb... Wavelength conversion Materials processing Power handling / stress tests Looking for collaboration with users 28

29 Backscattered power [a.u.] 1.7 kw quasi-single-frequency Yb-doped fibre MOPA For coherent beam combination with deep target-in-loop capability Fibre: T0173 Modulation frequency: 150 MHz 300 MHz SBS onset JTO Contract FA D Signal power [kw] Power limited by available pump power 2.4 kw from two diode sources MHz (M 2 = 1.6) Record power for high-gain MOPA In total 3.5 kw of 9xx nm diode pump power available in this lab

Progress on High Power Single Frequency Fiber Amplifiers at 1mm, 1.5mm and 2mm

Progress on High Power Single Frequency Fiber Amplifiers at 1mm, 1.5mm and 2mm Nufern, East Granby, CT, USA Progress on High Power Single Frequency Fiber Amplifiers at 1mm, 1.5mm and 2mm www.nufern.com Examples of Single Frequency Platforms at 1mm and 1.5mm and Applications 2 Back-reflection

More information

Fiber lasers: The next generation

Fiber lasers: The next generation Fiber lasers: The next generation David N Payne Optoelectronics Research Centre and SPI Lasers kw fibre laser No connection! After the telecoms EDFA The fibre laser another fibre revolution? Fibre laser

More information

A 100 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 1120 nm

A 100 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 1120 nm A 1 W all-fiber linearly-polarized Yb-doped single-mode fiber laser at 112 nm Jianhua Wang, 1,2 Jinmeng Hu, 1 Lei Zhang, 1 Xijia Gu, 3 Jinbao Chen, 2 and Yan Feng 1,* 1 Shanghai Key Laboratory of Solid

More information

Fiber lasers and their advanced optical technologies of Fujikura

Fiber lasers and their advanced optical technologies of Fujikura Fiber lasers and their advanced optical technologies of Fujikura Kuniharu Himeno 1 Fiber lasers have attracted much attention in recent years. Fujikura has compiled all of the optical technologies required

More information

Survey Report: Laser R&D

Survey Report: Laser R&D Survey Report: Laser R&D Peter Moulton VP/CTO, Q-Peak, Inc. DLA-2011 ICFA Mini-Workshop on Dielectric Laser Accelerators September 15, 2011 SLAC, Menlo Park, CA Outline DLA laser requirements (one version)

More information

Survey Report: Laser R&D

Survey Report: Laser R&D Survey Report: Laser R&D Peter Moulton VP/CTO, Q-Peak, Inc. DLA-2011 ICFA Mini-Workshop on Dielectric Laser Accelerators September 15, 2011 SLAC, Menlo Park, CA Outline DLA laser requirements (one version)

More information

Development of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers

Development of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers Development of Nano Second Pulsed Lasers Using Polarization Maintaining Fibers Shun-ichi Matsushita*, * 2, Taizo Miyato*, * 2, Hiroshi Hashimoto*, * 2, Eisuke Otani* 2, Tatsuji Uchino* 2, Akira Fujisaki*,

More information

Continuum White Light Generation. WhiteLase: High Power Ultrabroadband

Continuum White Light Generation. WhiteLase: High Power Ultrabroadband Continuum White Light Generation WhiteLase: High Power Ultrabroadband Light Sources Technology Ultrafast Pulses + Fiber Laser + Non-linear PCF = Spectral broadening from 400nm to 2500nm Ultrafast Fiber

More information

Mitigation of Self-Pulsing in High Power Pulsed Fiber Lasers

Mitigation of Self-Pulsing in High Power Pulsed Fiber Lasers Mitigation of Self-Pulsing in High Power Pulsed Fiber Lasers Yusuf Panbiharwala, Deepa Venkitesh, Balaji Srinivasan* Department of Electrical Engineering, Indian Institute of Technology Madras. *Email

More information

High peak power pulsed single-mode linearly polarized LMA fiber amplifier and Q-switch laser

High peak power pulsed single-mode linearly polarized LMA fiber amplifier and Q-switch laser High peak power pulsed single-mode linearly polarized LMA fiber amplifier and Q-switch laser V. Khitrov*, B. Samson, D. Machewirth, D. Yan, K. Tankala, A. Held Nufern, 7 Airport Park Road, East Granby,

More information

Optical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Photonics Group Department of Micro- and Nanosciences Aalto University

Optical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Photonics Group Department of Micro- and Nanosciences Aalto University Photonics Group Department of Micro- and Nanosciences Aalto University Optical Amplifiers Photonics and Integrated Optics (ELEC-E3240) Zhipei Sun Last Lecture Topics Course introduction Ray optics & optical

More information

Ring cavity tunable fiber laser with external transversely chirped Bragg grating

Ring cavity tunable fiber laser with external transversely chirped Bragg grating Ring cavity tunable fiber laser with external transversely chirped Bragg grating A. Ryasnyanskiy, V. Smirnov, L. Glebova, O. Mokhun, E. Rotari, A. Glebov and L. Glebov 2 OptiGrate, 562 South Econ Circle,

More information

Integrated disruptive components for 2µm fibre Lasers ISLA. 2 µm Sub-Picosecond Fiber Lasers

Integrated disruptive components for 2µm fibre Lasers ISLA. 2 µm Sub-Picosecond Fiber Lasers Integrated disruptive components for 2µm fibre Lasers ISLA 2 µm Sub-Picosecond Fiber Lasers Advantages: 2 - microns wavelength offers eye-safety potentially higher pulse energy and average power in single

More information

Elimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers

Elimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers Elimination of Self-Pulsations in Dual-Clad, Ytterbium-Doped Fiber Lasers 1.0 Modulation depth 0.8 0.6 0.4 0.2 0.0 Laser 3 Laser 2 Laser 4 2 3 4 5 6 7 8 Absorbed pump power (W) Laser 1 W. Guan and J. R.

More information

The Development of a High Quality and a High Peak Power Pulsed Fiber Laser With a Flexible Tunability of the Pulse Width

The Development of a High Quality and a High Peak Power Pulsed Fiber Laser With a Flexible Tunability of the Pulse Width The Development of a High Quality and a High Peak Power Pulsed Fiber Laser With a Flexible Tunability of the Pulse Width Ryo Kawahara *1, Hiroshi Hashimoto *1, Jeffrey W. Nicholson *2, Eisuke Otani *1,

More information

Fiber Lasers for EUV Lithography

Fiber Lasers for EUV Lithography Fiber Lasers for EUV Lithography A. Galvanauskas, Kai Chung Hou*, Cheng Zhu CUOS, EECS Department, University of Michigan P. Amaya Arbor Photonics, Inc. * Currently with Cymer, Inc 2009 International Workshop

More information

Dependence of stimulated Brillouin scattering in pulsed fiber amplifier on signal linewidth, pulse duration, and repetition rate

Dependence of stimulated Brillouin scattering in pulsed fiber amplifier on signal linewidth, pulse duration, and repetition rate Dependence of stimulated Brillouin scattering in pulsed fiber amplifier on signal linewidth, pulse duration, and repetition rate Rongtao Su ( Â ), Pu Zhou ( ), Xiaolin Wang ( ), Hu Xiao ( Ñ), and Xiaojun

More information

High Power Thin Disk Lasers. Dr. Adolf Giesen. German Aerospace Center. Institute of Technical Physics. Folie 1. Institute of Technical Physics

High Power Thin Disk Lasers. Dr. Adolf Giesen. German Aerospace Center. Institute of Technical Physics. Folie 1. Institute of Technical Physics High Power Thin Disk Lasers Dr. Adolf Giesen German Aerospace Center Folie 1 Research Topics - Laser sources and nonlinear optics Speiser Beam control and optical diagnostics Riede Atm. propagation and

More information

High-power semiconductor lasers for applications requiring GHz linewidth source

High-power semiconductor lasers for applications requiring GHz linewidth source High-power semiconductor lasers for applications requiring GHz linewidth source Ivan Divliansky* a, Vadim Smirnov b, George Venus a, Alex Gourevitch a, Leonid Glebov a a CREOL/The College of Optics and

More information

The absorption of the light may be intrinsic or extrinsic

The absorption of the light may be intrinsic or extrinsic Attenuation Fiber Attenuation Types 1- Material Absorption losses 2- Intrinsic Absorption 3- Extrinsic Absorption 4- Scattering losses (Linear and nonlinear) 5- Bending Losses (Micro & Macro) Material

More information

Generation of gigantic nanosecond pulses through Raman-Brillouin- Rayleigh cooperative process in single-mode optical fiber

Generation of gigantic nanosecond pulses through Raman-Brillouin- Rayleigh cooperative process in single-mode optical fiber Generation of gigantic nanosecond pulses through Raman-Brillouin- Rayleigh cooperative process in single-mode optical fiber Gautier Ravet a, Andrei A. Fotiadi a, b, Patrice Mégret a, Michel Blondel a a

More information

Examination Optoelectronic Communication Technology. April 11, Name: Student ID number: OCT1 1: OCT 2: OCT 3: OCT 4: Total: Grade:

Examination Optoelectronic Communication Technology. April 11, Name: Student ID number: OCT1 1: OCT 2: OCT 3: OCT 4: Total: Grade: Examination Optoelectronic Communication Technology April, 26 Name: Student ID number: OCT : OCT 2: OCT 3: OCT 4: Total: Grade: Declaration of Consent I hereby agree to have my exam results published on

More information

HIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS

HIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS HIGH POWER LASERS FOR 3 RD GENERATION GRAVITATIONAL WAVE DETECTORS P. Weßels for the LZH high power laser development team Laser Zentrum Hannover, Germany 23.05.2011 OUTLINE Requirements on lasers for

More information

Multiwatts narrow linewidth fiber Raman amplifiers

Multiwatts narrow linewidth fiber Raman amplifiers Multiwatts narrow linewidth fiber Raman amplifiers Yan Feng *, Luke Taylor, and Domenico Bonaccini Calia European Southern Observatory, Karl-Schwarzschildstr., D-878 Garching, Germany * Corresponding author:

More information

2. EXPERIMENTAL DESIGN

2. EXPERIMENTAL DESIGN All-glass Fiber Amplifier Pumped by Ultra-high Brightness Pumps Charles X. Yu*, Oleg Shatrovoy, and T. Y. Fan MIT Lincoln Lab, 244 Wood Street, Lexington, MA, USA 02421 *chars@ll.mit.edu ABSTRACT We investigate

More information

Dr. Rüdiger Paschotta RP Photonics Consulting GmbH. Competence Area: Fiber Devices

Dr. Rüdiger Paschotta RP Photonics Consulting GmbH. Competence Area: Fiber Devices Dr. Rüdiger Paschotta RP Photonics Consulting GmbH Competence Area: Fiber Devices Topics in this Area Fiber lasers, including exotic types Fiber amplifiers, including telecom-type devices and high power

More information

6.1 Thired-order Effects and Stimulated Raman Scattering

6.1 Thired-order Effects and Stimulated Raman Scattering Chapter 6 Third-order Effects We are going to focus attention on Raman laser applying the stimulated Raman scattering, one of the third-order nonlinear effects. We show the study of Nd:YVO 4 intracavity

More information

Lasers à fibres ns et ps de forte puissance. Francois SALIN EOLITE systems

Lasers à fibres ns et ps de forte puissance. Francois SALIN EOLITE systems Lasers à fibres ns et ps de forte puissance Francois SALIN EOLITE systems Solid-State Laser Concepts rod temperature [K] 347 -- 352 342 -- 347 337 -- 342 333 -- 337 328 -- 333 324 -- 328 319 -- 324 315

More information

Photonics (OPTI 510R 2017) - Final exam. (May 8, 10:30am-12:30pm, R307)

Photonics (OPTI 510R 2017) - Final exam. (May 8, 10:30am-12:30pm, R307) Photonics (OPTI 510R 2017) - Final exam (May 8, 10:30am-12:30pm, R307) Problem 1: (30pts) You are tasked with building a high speed fiber communication link between San Francisco and Tokyo (Japan) which

More information

A continuous-wave Raman silicon laser

A continuous-wave Raman silicon laser A continuous-wave Raman silicon laser Haisheng Rong, Richard Jones,.. - Intel Corporation Ultrafast Terahertz nanoelectronics Lab Jae-seok Kim 1 Contents 1. Abstract 2. Background I. Raman scattering II.

More information

Recent Progress in Active Fiber Designs and Monolithic High Power Fiber Laser Devices. Kanishka Tankala, Adrian Carter and Bryce Samson

Recent Progress in Active Fiber Designs and Monolithic High Power Fiber Laser Devices. Kanishka Tankala, Adrian Carter and Bryce Samson Recent Progress in Active Fiber Designs and Monolithic High Power Fiber Laser Devices Kanishka Tankala, Adrian Carter and Bryce Samson Advantages of Fiber Lasers Features Highly efficient diode pumped

More information

3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA ABSTRACT 1. INTRODUCTION

3550 Aberdeen Ave SE, Kirtland AFB, NM 87117, USA ABSTRACT 1. INTRODUCTION Beam Combination of Multiple Vertical External Cavity Surface Emitting Lasers via Volume Bragg Gratings Chunte A. Lu* a, William P. Roach a, Genesh Balakrishnan b, Alexander R. Albrecht b, Jerome V. Moloney

More information

Progress in ultrafast Cr:ZnSe Lasers. Evgueni Slobodtchikov, Peter Moulton

Progress in ultrafast Cr:ZnSe Lasers. Evgueni Slobodtchikov, Peter Moulton Progress in ultrafast Cr:ZnSe Lasers Evgueni Slobodtchikov, Peter Moulton Topics Diode-pumped Cr:ZnSe femtosecond oscillator CPA Cr:ZnSe laser system with 1 GW output This work was supported by SBIR Phase

More information

A new picosecond Laser pulse generation method.

A new picosecond Laser pulse generation method. PULSE GATING : A new picosecond Laser pulse generation method. Picosecond lasers can be found in many fields of applications from research to industry. These lasers are very common in bio-photonics, non-linear

More information

Fiber Amplifiers. Fiber Lasers. 1*5 World Scientific. Niloy K nulla. University ofconnecticut, USA HONG KONG NEW JERSEY LONDON

Fiber Amplifiers. Fiber Lasers. 1*5 World Scientific. Niloy K nulla. University ofconnecticut, USA HONG KONG NEW JERSEY LONDON LONDON Fiber Amplifiers Fiber Lasers Niloy K nulla University ofconnecticut, USA 1*5 World Scientific NEW JERSEY SINGAPORE BEIJING SHANGHAI HONG KONG TAIPEI CHENNAI Contents Preface v 1. Introduction 1

More information

Thin-Disc-Based Driver

Thin-Disc-Based Driver Thin-Disc-Based Driver Jochen Speiser German Aerospace Center (DLR) Institute of Technical Physics Solid State Lasers and Nonlinear Optics Folie 1 German Aerospace Center! Research Institution! Space Agency!

More information

Vertical External Cavity Surface Emitting Laser

Vertical External Cavity Surface Emitting Laser Chapter 4 Optical-pumped Vertical External Cavity Surface Emitting Laser The booming laser techniques named VECSEL combine the flexibility of semiconductor band structure and advantages of solid-state

More information

High brightness semiconductor lasers M.L. Osowski, W. Hu, R.M. Lammert, T. Liu, Y. Ma, S.W. Oh, C. Panja, P.T. Rudy, T. Stakelon and J.E.

High brightness semiconductor lasers M.L. Osowski, W. Hu, R.M. Lammert, T. Liu, Y. Ma, S.W. Oh, C. Panja, P.T. Rudy, T. Stakelon and J.E. QPC Lasers, Inc. 2007 SPIE Photonics West Paper: Mon Jan 22, 2007, 1:20 pm, LASE Conference 6456, Session 3 High brightness semiconductor lasers M.L. Osowski, W. Hu, R.M. Lammert, T. Liu, Y. Ma, S.W. Oh,

More information

High peak power singlefrequency. applications

High peak power singlefrequency. applications High peak power singlefrequency MOPFA for lidar applications L. Lombard, G. Canat, A. Durécu, J. Le Gouët, A. Dolfi- Bouteyre, M. Valla, B. Augère, D Goular, C. Besson. Applications of wind lidars Wake

More information

High order cascaded Raman random fiber laser with high spectral purity

High order cascaded Raman random fiber laser with high spectral purity Vol. 6, No. 5 5 Mar 18 OPTICS EXPRESS 575 High order cascaded Raman random fiber laser with high spectral purity JINYAN DONG,1, LEI ZHANG,1, HUAWEI JIANG,1, XUEZONG YANG,1, WEIWEI PAN,1, SHUZHEN CUI,1

More information

Low threshold continuous wave Raman silicon laser

Low threshold continuous wave Raman silicon laser NATURE PHOTONICS, VOL. 1, APRIL, 2007 Low threshold continuous wave Raman silicon laser HAISHENG RONG 1 *, SHENGBO XU 1, YING-HAO KUO 1, VANESSA SIH 1, ODED COHEN 2, OMRI RADAY 2 AND MARIO PANICCIA 1 1:

More information

Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible

Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible Raman-shifted wavelength-selectable pulsed fiber laser with high repetition rate and high pulse energy in the visible L. XU, * S. ALAM, Q. KANG, D. P. SHEPHERD AND D. J. RICHARDSON Optoelectronics Research

More information

Fiberoptic Communication Systems By Dr. M H Zaidi. Optical Amplifiers

Fiberoptic Communication Systems By Dr. M H Zaidi. Optical Amplifiers Optical Amplifiers Optical Amplifiers Optical signal propagating in fiber suffers attenuation Optical power level of a signal must be periodically conditioned Optical amplifiers are a key component in

More information

Narrow line diode laser stacks for DPAL pumping

Narrow line diode laser stacks for DPAL pumping Narrow line diode laser stacks for DPAL pumping Tobias Koenning David Irwin, Dean Stapleton, Rajiv Pandey, Tina Guiney, Steve Patterson DILAS Diode Laser Inc. Joerg Neukum Outline Company overview Standard

More information

Visible to infrared high-speed WDM transmission over PCF

Visible to infrared high-speed WDM transmission over PCF Visible to infrared high-speed WDM transmission over PCF Koji Ieda a), Kenji Kurokawa, Katsusuke Tajima, and Kazuhide Nakajima NTT Access Network Service Systems Laboratories, NTT Corporation, 1 7 1 Hanabatake,

More information

1 kw, 15!J linearly polarized fiber laser operating at 977 nm

1 kw, 15!J linearly polarized fiber laser operating at 977 nm 1 kw, 15!J linearly polarized fiber laser operating at 977 nm V. Khitrov, D. Machewirth, B. Samson, K. Tankala Nufern, 7 Airport Park Road, East Granby, CT 06026 phone: (860) 408-5000; fax: (860)408-5080;

More information

Active mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity

Active mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity Active mode-locking of miniature fiber Fabry-Perot laser (FFPL) in a ring cavity Shinji Yamashita (1)(2) and Kevin Hsu (3) (1) Dept. of Frontier Informatics, Graduate School of Frontier Sciences The University

More information

Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping

Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping Setup of the four-wavelength Doppler lidar system with feedback controlled pulse shaping Albert Töws and Alfred Kurtz Cologne University of Applied Sciences Steinmüllerallee 1, 51643 Gummersbach, Germany

More information

High power single frequency 780nm laser source generated from frequency doubling of a seeded fiber amplifier in a cascade of PPLN crystals

High power single frequency 780nm laser source generated from frequency doubling of a seeded fiber amplifier in a cascade of PPLN crystals High power single frequency 780nm laser source generated from frequency doubling of a seeded fiber amplifier in a cascade of PPLN crystals R. J. Thompson, M. Tu, D. C. Aveline, N. Lundblad, L. Maleki Jet

More information

Introduction Fundamentals of laser Types of lasers Semiconductor lasers

Introduction Fundamentals of laser Types of lasers Semiconductor lasers ECE 5368 Introduction Fundamentals of laser Types of lasers Semiconductor lasers Introduction Fundamentals of laser Types of lasers Semiconductor lasers How many types of lasers? Many many depending on

More information

Quantum-Well Semiconductor Saturable Absorber Mirror

Quantum-Well Semiconductor Saturable Absorber Mirror Chapter 3 Quantum-Well Semiconductor Saturable Absorber Mirror The shallow modulation depth of quantum-dot saturable absorber is unfavorable to increasing pulse energy and peak power of Q-switched laser.

More information

MULTI-STAGE YTTERBIUM FIBER-AMPLIFIER SEEDED BY A GAIN-SWITCHED LASER DIODE

MULTI-STAGE YTTERBIUM FIBER-AMPLIFIER SEEDED BY A GAIN-SWITCHED LASER DIODE MULTI-STAGE YTTERBIUM FIBER-AMPLIFIER SEEDED BY A GAIN-SWITCHED LASER DIODE Authors: M. Ryser, S. Pilz, A. Burn, V. Romano DOI: 10.12684/alt.1.101 Corresponding author: e-mail: M. Ryser manuel.ryser@iap.unibe.ch

More information

Research Article Over 19 W Single-Mode 1545 nm Er,Yb Codoped All-Fiber Laser

Research Article Over 19 W Single-Mode 1545 nm Er,Yb Codoped All-Fiber Laser Hindawi Advances in Condensed Matter Physics Volume 217, Article ID 748565, 5 pages https://doi.org/1.1155/217/748565 Research Article Over 19 W Single-Mode 1545 nm Er,Yb Codoped All-Fiber Laser Jiadong

More information

High-power operation of Tm:YLF, Ho:YLF and Er:YLF lasers

High-power operation of Tm:YLF, Ho:YLF and Er:YLF lasers High-power operation of Tm:YLF, Ho:YLF and Er:YLF lasers Peter F. Moulton Solid State and Diode Laser Technology Review 2003 20 May Albuquerque, NM Outline High-power Tm:YLF-pumped Ho:YLF laser ZGP OPO

More information

Sub-300 fs, 0.5 mj pulse at 1kHz from Ho:YLF amplifier and Kagome pulse compression

Sub-300 fs, 0.5 mj pulse at 1kHz from Ho:YLF amplifier and Kagome pulse compression Sub-300 fs, 0.5 mj pulse at 1kHz from Ho:YLF amplifier and Kagome pulse compression K. Murari 1,2,3, H. Cankaya 1,2, B. Debord 5, P. Li 1, G. Cirmi 1,2, G. M. Rossi 1,2, S. Fang 1,2, O. D. Mücke 1,2, P.

More information

Single frequency MOPA system with near diffraction limited beam

Single frequency MOPA system with near diffraction limited beam Single frequency MOPA system with near diffraction limited beam quality D. Chuchumishev, A. Gaydardzhiev, A. Trifonov, I. Buchvarov Abstract Near diffraction limited pulses of a single-frequency and passively

More information

High Power, Tunable, Continuous-Wave Fiber Lasers in the L-band using Cascaded Raman Amplifiers

High Power, Tunable, Continuous-Wave Fiber Lasers in the L-band using Cascaded Raman Amplifiers 1 High Power, Tunable, Continuous-Wave Fiber Lasers in the L-band using Cascaded Raman Amplifiers S Arun, Vishal Choudhury, Roopa Prakash and V R Supradeepa * Centre for Nano Science and Engineering, Indian

More information

Demonstration of directly modulated silicon Raman laser

Demonstration of directly modulated silicon Raman laser Demonstration of directly modulated silicon Raman laser Ozdal Boyraz and Bahram Jalali Optoelectronic Circuits and Systems Laboratory University of California, Los Angeles Los Angeles, CA 995-1594 jalali@ucla.edu

More information

Improving the efficiency of an optical parametric oscillator by tailoring the pump pulse shape

Improving the efficiency of an optical parametric oscillator by tailoring the pump pulse shape Improving the efficiency of an optical parametric oscillator by tailoring the pump pulse shape Zachary Sacks, 1,* Ofer Gayer, 2 Eran Tal, 1 and Ady Arie 2 1 Elbit Systems El Op, P.O. Box 1165, Rehovot

More information

Fiber Raman Lasers and frequency conversion to visible regime

Fiber Raman Lasers and frequency conversion to visible regime Fiber aman Lasers and frequency conversion to visible regime Yan Feng, Shenghong Huang, Akira Shirakawa, and Ken-ichi Ueda nstitute for Laser Science University of Electro-Communications, Japan feng@ils.uec.ac.jp

More information

SUPPLEMENTARY INFORMATION

SUPPLEMENTARY INFORMATION Electrically pumped continuous-wave III V quantum dot lasers on silicon Siming Chen 1 *, Wei Li 2, Jiang Wu 1, Qi Jiang 1, Mingchu Tang 1, Samuel Shutts 3, Stella N. Elliott 3, Angela Sobiesierski 3, Alwyn

More information

Performance Analysis of Designing a Hybrid Optical Amplifier (HOA) for 32 DWDM Channels in L-band by using EDFA and Raman Amplifier

Performance Analysis of Designing a Hybrid Optical Amplifier (HOA) for 32 DWDM Channels in L-band by using EDFA and Raman Amplifier Performance Analysis of Designing a Hybrid Optical Amplifier (HOA) for 32 DWDM Channels in L-band by using EDFA and Raman Amplifier Aied K. Mohammed, PhD Department of Electrical Engineering, University

More information

Latest developments in high power, tunable, CW, narrow line thulium fiber laser for deployment to the ISTEF

Latest developments in high power, tunable, CW, narrow line thulium fiber laser for deployment to the ISTEF Latest developments in high power, tunable, CW, narrow line thulium fiber laser for deployment to the ISTEF Vikas Sudesh *a, Timothy S. McComb a, Robert A. Sims a, Lawrence Shah a, Martin Richardson a

More information

Photonic Crystal Fiber Interfacing. In partnership with

Photonic Crystal Fiber Interfacing. In partnership with Photonic Crystal Fiber Interfacing In partnership with Contents 4 Photonics Crystal Fibers 6 End-capping 8 PCF connectors With strong expertise in designing fiber lasers and fused fiber components, ALPhANOV,

More information

Development of Mid-infrared Solid-State Lasers

Development of Mid-infrared Solid-State Lasers Development of Mid-infrared Solid-State Lasers M. J. Daniel Esser Team members: C. Jacobs, W. Koen, H. Strauss, D. Preussler, L. R. Botha O. J. P. Collett and C. Bollig Laser Sources Group CSIR National

More information

Advanced seeders for fiber lasers - IFLA. 23 June. 2014

Advanced seeders for fiber lasers - IFLA. 23 June. 2014 Advanced seeders for fiber lasers - IFLA 23 June. 2014 Seeders - introduction In MOPA * pulsed fiber lasers, seeders largely impact major characteristics of the laser system: Optical spectrum Peak power

More information

Actively Q-switched 1.6-mJ tapered double-clad ytterbium-doped fiber laser

Actively Q-switched 1.6-mJ tapered double-clad ytterbium-doped fiber laser Actively Q-switched 1.6-mJ tapered double-clad ytterbium-doped fiber laser Juho Kerttula, 1,* Valery Filippov, 1 Yuri Chamorovskii, 2 Konstantin Golant, 2 and Oleg G. Okhotnikov, 1 1 Optoelectronics Research

More information

Supplementary Figures

Supplementary Figures Supplementary Figures Supplementary Figure 1: Mach-Zehnder interferometer (MZI) phase stabilization. (a) DC output of the MZI with and without phase stabilization. (b) Performance of MZI stabilization

More information

All-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser

All-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser International Conference on Logistics Engineering, Management and Computer Science (LEMCS 2014) All-Optical Clock Division Using Period-one Oscillation of Optically Injected Semiconductor Laser Shengxiao

More information

End Capped High Power Assemblies

End Capped High Power Assemblies Fiberguide s end capped fiber optic assemblies allow the user to achieve higher coupled power into a fiber core by reducing the power density at the air/ silica interface, commonly the point of laser damage.

More information

High-Power, Passively Q-switched Microlaser - Power Amplifier System

High-Power, Passively Q-switched Microlaser - Power Amplifier System High-Power, Passively Q-switched Microlaser - Power Amplifier System Yelena Isyanova Q-Peak, Inc.,135 South Road, Bedford, MA 01730 isyanova@qpeak.com Jeff G. Manni JGM Associates, 6 New England Executive

More information

Single-Frequency, 2-cm, Yb-Doped Silica-Fiber Laser

Single-Frequency, 2-cm, Yb-Doped Silica-Fiber Laser Single-Frequency, 2-cm, Yb-Doped Silica-Fiber Laser W. Guan and J. R. Marciante University of Rochester Laboratory for Laser Energetics The Institute of Optics Frontiers in Optics 2006 90th OSA Annual

More information

International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research)

International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research) International Association of Scientific Innovation and Research (IASIR) (An Association Unifying the Sciences, Engineering, and Applied Research) International Journal of Emerging Technologies in Computational

More information

Spatial Investigation of Transverse Mode Turn-On Dynamics in VCSELs

Spatial Investigation of Transverse Mode Turn-On Dynamics in VCSELs Spatial Investigation of Transverse Mode Turn-On Dynamics in VCSELs Safwat W.Z. Mahmoud Data transmission experiments with single-mode as well as multimode 85 nm VCSELs are carried out from a near-field

More information

Characteristics of Q-Switched Cladding-Pumped Ytterbium-Doped Fiber Lasers with Different High-Energy Fiber Designs

Characteristics of Q-Switched Cladding-Pumped Ytterbium-Doped Fiber Lasers with Different High-Energy Fiber Designs IEEE JOUNRNAL OF QUANTUM ELECTRONICS, VOL. 37, NO. 2, FEBRUARY 2001 199 Characteristics of Q-Switched Cladding-Pumped Ytterbium-Doped Fiber Lasers with Different High-Energy Fiber Designs Cyril C. Renaud,

More information

Optical Fibers p. 1 Basic Concepts p. 1 Step-Index Fibers p. 2 Graded-Index Fibers p. 4 Design and Fabrication p. 6 Silica Fibers p.

Optical Fibers p. 1 Basic Concepts p. 1 Step-Index Fibers p. 2 Graded-Index Fibers p. 4 Design and Fabrication p. 6 Silica Fibers p. Preface p. xiii Optical Fibers p. 1 Basic Concepts p. 1 Step-Index Fibers p. 2 Graded-Index Fibers p. 4 Design and Fabrication p. 6 Silica Fibers p. 6 Plastic Optical Fibers p. 9 Microstructure Optical

More information

Practical Applications of Laser Technology for Semiconductor Electronics

Practical Applications of Laser Technology for Semiconductor Electronics Practical Applications of Laser Technology for Semiconductor Electronics MOPA Single Pass Nanosecond Laser Applications for Semiconductor / Solar / MEMS & General Manufacturing Mark Brodsky US Application

More information

X-CAN. A coherent amplification network of femtosecond fiber amplifiers

X-CAN. A coherent amplification network of femtosecond fiber amplifiers X-CAN A coherent amplification network of femtosecond fiber amplifiers Jean-Christophe Chanteloup, Louis Daniault LULI, Ecole Polytechnique, CNRS, CEA, UPMC, Route de Saclay, 91128, Palaiseau, France Gérard

More information

High Peak Power Fiber Seeds & Efficient Stabilized Pumps

High Peak Power Fiber Seeds & Efficient Stabilized Pumps High Peak Power Fiber Seeds & Efficient Stabilized Pumps Features Ultra Narrow Spectral Bandwidth (< 100kHz Instantaneous for single mode diodes) Ultra Track Linear Tracking Photodiode Temperature Stabilized

More information

Chapter 1 Introduction

Chapter 1 Introduction Chapter 1 Introduction 1-1 Preface Telecommunication lasers have evolved substantially since the introduction of the early AlGaAs-based semiconductor lasers in the late 1970s suitable for transmitting

More information

PUBLISHED VERSION.

PUBLISHED VERSION. PUBLISHED VERSION Chang, Wei-Han; Simakov, Nikita; Hosken, David John; Munch, Jesper; Ottaway, David John; Veitch, Peter John. Resonantly diode-pumped continuous-wave and Q-switched Er:YAG laser at 1645

More information

External cavities for controling spatial and spectral properties of SC lasers. J.P. Huignard TH-TRT

External cavities for controling spatial and spectral properties of SC lasers. J.P. Huignard TH-TRT External cavities for controling spatial and spectral properties of SC lasers. J.P. Huignard TH-TRT Bright Er - Partners. WP 3 : External cavities approaches for high brightness. - RISOE TUD Dk - Institut

More information

High-power All-Fiber components: The missing link for high power fiber lasers

High-power All-Fiber components: The missing link for high power fiber lasers High- All-Fiber components: The missing link for high lasers François Gonthier, Lilian Martineau, Nawfel Azami, Mathieu Faucher, François Séguin, Damien Stryckman, Alain Villeneuve ITF Optical Technologies

More information

High power VCSEL array pumped Q-switched Nd:YAG lasers

High power VCSEL array pumped Q-switched Nd:YAG lasers High power array pumped Q-switched Nd:YAG lasers Yihan Xiong, Robert Van Leeuwen, Laurence S. Watkins, Jean-Francois Seurin, Guoyang Xu, Alexander Miglo, Qing Wang, and Chuni Ghosh Princeton Optronics,

More information

Eye safe solid state lasers for remote sensing and coherent laser radar

Eye safe solid state lasers for remote sensing and coherent laser radar Eye safe solid state lasers for remote sensing and coherent laser radar Jesper Munch, Matthew Heintze, Murray Hamilton, Sean Manning, Y. Mao, Damien Mudge and Peter Veitch Department of Physics The University

More information

Optical Fibre Amplifiers Continued

Optical Fibre Amplifiers Continued 1 Optical Fibre Amplifiers Continued Stavros Iezekiel Department of Electrical and Computer Engineering University of Cyprus ECE 445 Lecture 09 Fall Semester 2016 2 ERBIUM-DOPED FIBRE AMPLIFIERS BASIC

More information

Kilowatt Class High-Power CW Yb:YAG Cryogenic Laser

Kilowatt Class High-Power CW Yb:YAG Cryogenic Laser Kilowatt Class High-Power CW Yb:YAG Cryogenic Laser D.C. Brown, J.M. Singley, E. Yager, K. Kowalewski, J. Guelzow, and J. W. Kuper Snake Creek Lasers, LLC, Hallstead, PA 18822 ABSTRACT We discuss progress

More information

Optimization of supercontinuum generation in photonic crystal fibers for pulse compression

Optimization of supercontinuum generation in photonic crystal fibers for pulse compression Optimization of supercontinuum generation in photonic crystal fibers for pulse compression Noah Chang Herbert Winful,Ted Norris Center for Ultrafast Optical Science University of Michigan What is Photonic

More information

Multi-Wavelength, µm Tunable, Tandem OPO

Multi-Wavelength, µm Tunable, Tandem OPO Multi-Wavelength, 1.5-10-µm Tunable, Tandem OPO Yelena Isyanova, Alex Dergachev, David Welford, and Peter F. Moulton Q-Peak, Inc.,135 South Road, Bedford, MA 01730 isyanova@qpeak.com Introduction Abstract:

More information

Simultaneous pulse amplification and compression in all-fiber-integrated pre-chirped large-mode-area Er-doped fiber amplifier

Simultaneous pulse amplification and compression in all-fiber-integrated pre-chirped large-mode-area Er-doped fiber amplifier Simultaneous pulse amplification and compression in all-fiber-integrated pre-chirped large-mode-area Er-doped fiber amplifier Gong-Ru Lin 1 *, Ying-Tsung Lin, and Chao-Kuei Lee 2 1 Graduate Institute of

More information

Directly Chirped Laser Source for Chirped Pulse Amplification

Directly Chirped Laser Source for Chirped Pulse Amplification Directly Chirped Laser Source for Chirped Pulse Amplification Input pulse (single frequency) AWG RF amp Output pulse (chirped) Phase modulator Normalized spectral intensity (db) 64 65 66 67 68 69 1052.4

More information

Efficient All-fiber Passive Coherent Combining of Fiber Lasers

Efficient All-fiber Passive Coherent Combining of Fiber Lasers Efficient All-fiber Passive Coherent Combining of Fiber Lasers Baishi Wang (1), Eric Mies (1), Monica Minden (2), Anthony Sanchez (3) (1) Vytran, LLC, 14 Campus Drive, Morganville, NJ 7751, (2) HRL Laboratories,

More information

High-gain Er-doped fiber amplifier generating eye-safe MW peak-power, mj-energy pulses

High-gain Er-doped fiber amplifier generating eye-safe MW peak-power, mj-energy pulses High-gain Er-doped fiber amplifier generating eye-safe MW peak-power, mj-energy pulses Sebastien Desmoulins and Fabio Di Teodoro 1,* Aculight Corporation, 22121 2 th Avenue S.E., Bothell, WA 921 1 Currently

More information

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 37

FIBER OPTICS. Prof. R.K. Shevgaonkar. Department of Electrical Engineering. Indian Institute of Technology, Bombay. Lecture: 37 FIBER OPTICS Prof. R.K. Shevgaonkar Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture: 37 Introduction to Raman Amplifiers Fiber Optics, Prof. R.K. Shevgaonkar, Dept.

More information

High-power Yb-doped continuous-wave and pulsed fibre lasers

High-power Yb-doped continuous-wave and pulsed fibre lasers PRAMANA c Indian Academy of Sciences Vol. 82, No. 1 journal of January 2014 physics pp. 15 27 High-power Yb-doped continuous-wave and pulsed fibre lasers B N UPADHYAYA Solid State Laser Division, Raja

More information

Power Scaling of Tm:fiber Lasers to the kw Level

Power Scaling of Tm:fiber Lasers to the kw Level Power Scaling of Tm:fiber Lasers to the kw Level Peter F. Moulton Q-Peak, Inc. CREOL Industrial Affiliates Day 2009 High Power Optical Sources for the 21st Century April 17, 2009 Outline Background Fundamentals

More information

Lecture 6 Fiber Optical Communication Lecture 6, Slide 1

Lecture 6 Fiber Optical Communication Lecture 6, Slide 1 Lecture 6 Optical transmitters Photon processes in light matter interaction Lasers Lasing conditions The rate equations CW operation Modulation response Noise Light emitting diodes (LED) Power Modulation

More information

Ph 77 ADVANCED PHYSICS LABORATORY ATOMIC AND OPTICAL PHYSICS

Ph 77 ADVANCED PHYSICS LABORATORY ATOMIC AND OPTICAL PHYSICS Ph 77 ADVANCED PHYSICS LABORATORY ATOMIC AND OPTICAL PHYSICS Diode Laser Characteristics I. BACKGROUND Beginning in the mid 1960 s, before the development of semiconductor diode lasers, physicists mostly

More information

High average power picosecond pulse generation from a thulium-doped all-fiber MOPA system

High average power picosecond pulse generation from a thulium-doped all-fiber MOPA system High average power picosecond pulse generation from a thulium-doped all-fiber MOPA system Jiang Liu, Qian Wang, and Pu Wang * National Center of Laser Technology, Institute of Laser Engineering, Beijing

More information

Transmitting Light: Fiber-optic and Free-space Communications Holography

Transmitting Light: Fiber-optic and Free-space Communications Holography 1 Lecture 9 Transmitting Light: Fiber-optic and Free-space Communications Holography 2 Wireless Phone Calls http://havilandtelconews.com/2011/10/the-reality-behind-wireless-networks/ 3 Undersea Cable and

More information