RF-based Synchronization of the Seed and Pump-Probe Lasers to the Optical Synchronization System at FLASH
|
|
- Randolf Cannon
- 5 years ago
- Views:
Transcription
1 RF-based Synchronization of the Seed and Pump-Probe Lasers to the Optical Synchronization System at FLASH Introduction to the otical synchronization system and concept of RF generation for locking of Ti:Sapphire oscillators M. Felber, M. K. Bock, P. Gessler, K. E. Hacker, T. Lamb, F. Ludwig, H. Schlarb, B. Schmidt Deutsches Elektronen Synchrotron - DESY, Hamburg, Germany J. Breunlin, S. Schulz, L. Wissmann Hamburg University, Hamburg, Germany FEL 2010 Conference Malmö, Sweden August 26th, 2010
2 Motivation Seed Laser The temporal overlap is mandatory for the seeding process Right now there is no high resolution monitor for the synchronization (streak camera has ~1ps resolution) Electron bunch duration with 3rd harmonic module is ~120 fs, HHG pulse ~40 fs Requiring synchronization better than 40 fs rms Pump-Probe Laser The arrival time of the FEL pulse is given by the electron bunch Pump-probe experiments can make use of an electro-optic arrival time monitor to sort the data in time, after the experiment Resolution is in the order of 80 fs but users request more precise synchronization for some experiments If the timing can be set on a10 fs scale, entire movies of a process can be recorded within one burst, without the need of sorting the data
3 Roadmap for Precise Synchronization Establish a machine reference that is cabable of providing a point-to-point synchronization better than 10 fs Pulsed optical synchronization system Make sure, the beam arrival time is synchronized to the timig reference Beam-based feedback Synchronize external lasers to the same reference First step: RF-based Finally purely optical
4 General Layout of an Optical Synchronization System The reference timing information is encoded in the precise repetition rate of an optical pulse train RF Master Oscillator RF to Optical Master Laser Oscillator Laser Source locked to machine reference Splitting ( 16 Outputs) Distribution and active length stabilization Fiber Links ( 300 m) Optical Lock Injector Laser Optical to RF Low Level RF Each RF Station.. Optical to RF Low Level RF Beam Diagnostic BAM / EBPM Beam Diagnostic BAM / EBPM Optical Lock / RF Lock Seed Laser Optical Lock / RF Lock Probe Laser Aimed point-to point synchronization: 10 fs GUN LINAC Undulator Pump-Probe Exp.
5 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock
6 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock o Synchronization Hutch Two redundant Master Laser Oscillators (MLOs) locked to the machine reference Free-space laser beam splitting to up to 16 ports Erbium-doped fiber amplifiers at each port Up to 16 Link stabilization units, each supplying one fiber link
7 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock o Synchronization Hutch Two redundant Master Laser Oscillators (MLOs) locked to the machine reference Free-space laser beam splitting to up to 16 ports Erbium-doped fiber amplifiers at each port Up to 16 Link stabilization units, each supplying one fiber link o Link end-stations Bunch Arrival-time Monitors (BAMs)
8 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock o Synchronization Hutch Two redundant Master Laser Oscillators (MLOs) locked to the machine reference Free-space laser beam splitting to up to 16 ports Erbium-doped fiber amplifiers at each port Up to 16 Link stabilization units, each supplying one fiber link o Link end-stations Bunch Arrival-time Monitors (BAMs) Chicane Beam Position Monitors (CBPMs)
9 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock o Synchronization Hutch Two redundant Master Laser Oscillators (MLOs) locked to the machine reference Free-space laser beam splitting to up to 16 ports Erbium-doped fiber amplifiers at each port Up to 16 Link stabilization units, each supplying one fiber link o Link end-stations Bunch Arrival-time Monitors (BAMs) Chicane Beam Position Monitors (CBPMs) Two-color balanced Optical Cross-Correlator (OXC)
10 Optical Synchronization System at FLASH Currenty installed and planned infrastructure Courtesy M.K. Bock o Synchronization Hutch Two redundant Master Laser Oscillators (MLOs) locked to the machine reference Free-space laser beam splitting to up to 16 ports Erbium-doped fiber amplifiers at each port Up to 16 Link stabilization units, each supplying one fiber link o Link end-stations Bunch Arrival-time Monitors (BAMs) Chicane Beam Position Monitors (CBPMs) Two-color balanced Optical Cross-Correlator (OXC) RF generation
11 Master Laser Oscillator For many years self-built fiber lasers based on self phase modulation have been used 1550 nm telecommunication wavelength repetition rate of MHz (1.3 GHz /6) Important Issues Original design: J. Chen et. al., Opt. Lett. 32, (2007) Recently a commercial SESAM-based laser was installed and tested o Phase Noise o Frequency stability tuning range o Piezo stroke & bandwidth (resonance) o Amplitude Noise o Modulation input range & bandwidth o Output Power o Pulse width o Spectrum (peak and bandwidth) o Robustness & reproducability o Lifetime o Formfactor S. Schulz et al, this conferencethpa05
12 Link Stabilization Unit Industrialized design in operation for about one year Improved version being manufactured right now Courtesy F. Loehl Courtesy M.K. Bock
13 RF generation from optical pulse train Direct Conversion (gating lower frequencies) + Drift: 10.7 fs over > GHz (M. Felber, PAC09, TH6REP088) + Jitter: 3.3 fs 3 GHz (S. Hunziker, DIPAC09, TUPB43) + small and robust mw P opt sufficient + relatively cheap (<2k ) Small output power vs. amplifier drift Am-to-PM conversion: 1-4 ps/mw Temperature dependency ~350 fs/ C Power [dbm] ER80-8/125 70cm here: small bandwidth PD ER110-4/125 79cm SMF Freq [GHz]
14 Concept for RF-based synchronzation of lasers WDM gain fiber WDM FRM 90/10 coupler 99/01 coupler 50/50 future use for optical cross-correlator Pump-Probe oscillator frequency: 108 MHz Optical Link End Photo Diode >10 GHz Splitter 1 BPF 108 MHz BPF 1.3 GHz Pump Laser Diode Amplifier Amplifier Directional Coupler In Cpl Out Iso Ti:Sa 108 MHz Monitor Directional Coupler LDD Phase Detector Directional Coupler Out Iso LPF 1.9 MHz Mixer In Cpl Reference 108 MHz Monitor Phase Shifter Directional Coupler LPF 1.9 MHz DC LNA Optical Power Monitor Amplifier BPF 108 MHz Photo Diode (slow) Frequency Divider :2 Amplifier BPF 216 MHz BPF 1.3 GHz 1 Splitter Photo Diode >10 GHz HHG laser oscillator frequency: 81 MHz, likely to be upgraded to 108 MHz Three frequencies are generated from referenceand Ti:Sa pulse trains S 2 3 BPF 9.1 GHz Amplifier In Cpl In Cpl Out Iso Ti:Sa 1.3 GHz Monitor Directional Coupler Out Iso Out Iso LPF 1.9 MHz Mixer In Cpl Directional Phase Coupler Shifter Amplifier Out Iso Reference 1.3 GHz Monitor In Cpl BPF 9.1 GHz 2 3 S First adjustment with 1.3 GHz IQ modulator, then set other phases Ti:Sa Oscillator Piezo Driver RF locking components DAC Digital Controller ADC ADC ADC Ti:Sa 9.1 GHz Monitor LPF 1.9 MHz Reference 9.1 GHz Monitor LO I Q RF Vector Modulator 1.3 GHz RF Reference Lock from coarse to fine in steps at 108 MHz, 1.3 GHz, and 9.1 GHz
15 Phase Noise and Timing Jitter of the Seed Laser at 1.3 GHz
16 First measurements of refernce signal in HHG laboratory Amplitude noise of optical pulse train Monitor Output Power Spectral Density [dbv/hz] Voltage Noise of Optical Power Monitor at Link End -60 link in 'open loop' mode k 10k 100k 1M 10M Relative Intensity Noise Frequency of Optical [Hz] Pulse Train at Link End RIN Integrated [%] link in 'open loop' mode k 10k 100k 1M 10M Frequency [Hz]
17 First measurements of refernce signal in HHG laboratory Amplitude noise of optical pulse train Monitor Output Power Spectral Density [dbv/hz] Voltage Noise of Optical Power Monitor at Link End -60 link in 'open loop' mode -80 OXC signal found, feedback off k 10k 100k 1M 10M Relative Intensity Noise Frequency of Optical [Hz] Pulse Train at Link End RIN Integrated [%] link in 'open loop' mode OXC signal found, feedback off k 10k 100k 1M 10M Frequency [Hz]
18 First measurements of refernce signal in HHG laboratory Amplitude noise of optical pulse train Monitor Output Power Spectral Density [dbv/hz] RIN Integrated [%] Voltage Noise of Optical Power Monitor at Link End link in 'open loop' mode OXC signal found, feedback off OXC signal found, feedback on k 10k 100k 1M 10M Relative Intensity Noise Frequency of Optical [Hz] Pulse Train at Link End link in 'open loop' mode 1.25 OXC signal found, feedback off 1 OXC signal found, feedback on k 10k 100k 1M 10M Frequency [Hz]
19 First measurements of refernce signal in HHG laboratory Amplitude noise of optical pulse train Monitor Output Power Spectral Density [dbv/hz] RIN Integrated [%] Voltage Noise of Optical Power Monitor at Link End link in 'open loop' mode OXC signal found, feedback off OXC signal found, feedback on k 10k 100k 1M 10M Relative Intensity Noise Frequency of Optical [Hz] Pulse Train at Link End link in 'open loop' mode 1.25 OXC signal found, feedback off 1 OXC signal found, feedback on The problem is understood. First test showed already strong suppression of the effect It does not influence BAMs because of high-pass characteristic The new link design eliminates the effect k 10k 100k 1M 10M Frequency [Hz]
20 First measurements of refernce signal in HHG laboratory Phase noise of electrical signal after photo diode SSB Phase Noise [dbc/hz] GHz Phase Noise at Link End Link in 'open loop' mode Locking bandwidth of MLO can further be reduced Integrated Timing Jitter [fs] k 10k 100k 1M 10M 1.3 GHz Phase Frequency Noise [Hz] at Link End Link in 'open loop' mode k 10k 100k 1M 10M Frequency [Hz]
21 First measurements of refernce signal in HHG laboratory Conversion of the amplitude noise to phase noise in photo diodes SSB Phase Noise [dbc/hz] Integrated Timing Jitter [fs] GHz Phase Noise at Link End Link in 'open loop' mode Link stabilization fb on k 10k 100k 1M 10M 1.3 GHz Phase Frequency Noise [Hz] at Link End Link in 'open loop' mode Link stabilization fb on Locking bandwidth of MLO can further be reduced The amplitude noise of the electrical pulse train degrades the phase noise of the stabilized link by about 70 fs [1 khz 10 MHz] k 10k 100k 1M 10M Frequency [Hz]
22 First measurements of refernce signal in HHG laboratory Conversion of the amplitude noise to phase noise in photo diodes SSB Phase Noise [dbc/hz] Integrated Timing Jitter [fs] GHz Phase Noise at Link End Link in 'open loop' mode Link stabilization fb on DRO free running k 10k 100k 1M 10M 1.3 GHz Phase Frequency Noise [Hz] at Link End Link in 'open loop' mode Link stabilization fb on DRO free running Locking bandwidth of MLO can further be reduced The amplitude noise of the electrical pulse train degrades the phase noise of the stabilized link by about 75 fs [1 khz 10 MHz] A low noise DRO provides the possibility to filter out this noise k 10k 100k 1M 10M Frequency [Hz]
23 First measurements of refernce signal in HHG laboratory Conversion of the amplitude noise to phase noise in photo diodes SSB Phase Noise [dbc/hz] Integrated Timing Jitter [fs] GHz Phase Noise at Link End Link in 'open loop' mode Link stabilization fb on DRO free running DRO locked to stbilized link k 10k 100k 1M 10M 1.3 GHz Phase Frequency Noise [Hz] at Link End Link in 'open loop' mode Link stabilization fb on 150 DRO free running DRO locked to stbilized link k 10k 100k 1M 10M Frequency [Hz] Locking bandwidth of MLO can further be reduced The amplitude noise of the electrical pulse train degrades the phase noise of the stabilized link by about 75 fs [1 khz 10 MHz] A low noise DRO provides the possibility to filter out this noise The locked DRO follows the reference and provides low phase noise at higher offset frequencies
24 Conclusion and Outlook The optical synchronization system at FLASH is continuously improved Optical reference link to HHG laser is almost finished RF components are investigated and ready for assembly Link to pump-probe laser will be installed before end of this year Two-color balanced optical cross-correlator is already installed and tested at the injector laser It will extend the RF-based synchronization of the seed and pump-probe lasers until summer 2011 Thank you!
RF-Based Detector for Measuring Fiber Length Changes with Sub-5 Femtosecond Long-Term Stability.
RF-Based Detector for Measuring Fiber Length Changes with Sub-5 Femtosecond Long-Term Stability. J. Zemella 1, V. Arsov 1, M. K. Bock 1, M. Felber 1, P. Gessler 1, K. Gürel 3, K. Hacker 1, F. Löhl 1, F.
More informationInstallation Progress of the Laser-based Synchronization System at FLASH.
Installation Progress of the Laser-based Synchronization System at FLASH. Overview, Experiences, Performance and Outlook Sebastian Schulz 1,2 on behalf of the FLASH LbSyn Team 1 Institute of Experimental
More informationsynchronization system
Status of the optical synchronization system Holger Schlarb DESY for the LbSyn team V. Arsov, M. C. Behrens, Bock, P. Gessler, M. Felber, K. Hacker, F. Loehl, F. Ludwig, K-H. Matthiesen, B. Schmidt, S.
More informationFemtosecond-stability delivery of synchronized RFsignals to the klystron gallery over 1-km optical fibers
FEL 2014 August 28, 2014 THB03 Femtosecond-stability delivery of synchronized RFsignals to the klystron gallery over 1-km optical fibers Kwangyun Jung 1, Jiseok Lim 1, Junho Shin 1, Heewon Yang 1, Heung-Sik
More informationA high resolution bunch arrival time monitor system for FLASH / XFEL
A high resolution bunch arrival time monitor system for FLASH / XFEL K. Hacker, F. Löhl, F. Ludwig, K.H. Matthiesen, H. Schlarb, B. Schmidt, A. Winter October 24 th Principle of the arrival time detection
More informationElectro-optic Spectral Decoding Measurements at FLASH
Electro-optic Spectral Decoding Measurements at FLASH, FLA Florian Loehl, Sebastian Schulz, Laurens Wißmann Motivation Development of a robust online bunch length monitor for FLASH and XFEL Transition
More informationRecent Progress in Pulsed Optical Synchronization Systems
FLS 2010 Workshop March 4 th, 2010 Recent Progress in Pulsed Optical Synchronization Systems Franz X. Kärtner Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics,
More informationStatus on Pulsed Timing Distribution Systems and Implementations at DESY, FERMI and XFEL
FLS Meeting March 7, 2012 Status on Pulsed Timing Distribution Systems and Implementations at DESY, FERMI and XFEL Franz X. Kärtner Center for Free-Electron Laser Science, DESY and Department of Physics,
More informationPerformance Evaluation of the Upgraded BAMs at FLASH
Performance Evaluation of the Upgraded BAMs at FLASH with a compact overview of the BAM, the interfacing systems & a short outlook for 2019. Marie K. Czwalinna On behalf of the Special Diagnostics team
More informationProgress of the TEO experiment at FLASH
Progress of the TEO experiment at VUV-FEL at DESY - Armin Azima S. Duesterer, J. Feldhaus, H. Schlarb, H. Redlin, B. Steffen, DESY Hamburg K. Sengstock, Uni Hamburg Adrian Cavalieri, David Fritz, David
More informationTesting with Femtosecond Pulses
Testing with Femtosecond Pulses White Paper PN 200-0200-00 Revision 1.3 January 2009 Calmar Laser, Inc www.calmarlaser.com Overview Calmar s femtosecond laser sources are passively mode-locked fiber lasers.
More informationINTRA-TRAIN LONGITUDINAL FEEDBACK FOR BEAM STABILIZATION AT FLASH
INTRA-TRAIN LONGITUDINAL FEEDBACK FOR BEAM STABILIZATION AT FLASH W. Koprek*, C. Behrens, M. K. Bock, M. Felber, P. Gessler, K. Hacker, H. Schlarb, C. Schmidt, B. Steffen, S. Wesch, DESY, Hamburg, Germany
More informationSYNCHRONIZATION SYSTEMS FOR ERLS
SYNCHRONIZATION SYSTEMS FOR ERLS Stefan Simrock, Frank Ludwig, Holger Schlarb DESY Notkestr. 85, 22603 Hamburg News, Germany Corresponding author: Stefan Simrock DESY Notkestr. 85 22603 Hamburg, Germany
More informationFLASH II. FLASH II: a second undulator line and future test bed for FEL development.
FLASH II FLASH II: a second undulator line and future test bed for FEL development Bart.Faatz@desy.de Outline Proposal Background Parameters Layout Chalenges Timeline Cost estimate Personnel requirements
More informationFemtosecond Synchronization of Laser Systems for the LCLS
Femtosecond Synchronization of Laser Systems for the LCLS, Lawrence Doolittle, Gang Huang, John W. Staples, Russell Wilcox (LBNL) John Arthur, Josef Frisch, William White (SLAC) 26 Aug 2010 FEL2010 1 Berkeley
More informationJungwon Kim, Jonathan A. Cox, Jian J. Chen & Franz X. Kärtner. Department of Electrical Engineering and Computer Science and Research Laboratory
1 Supplementary Information Drift-free femtosecond timing synchronization of remote optical and microwave sources with better than 10-19 -level stability Jungwon Kim, Jonathan A. Cox, Jian J. Chen & Franz
More informationTIMING DISTRIBUTION AND SYNCHRONIZATION COMPLETE SOLUTIONS FROM ONE SINGLE SOURCE
TIMING DISTRIBUTION AND SYNCHRONIZATION COMPLETE SOLUTIONS FROM ONE SINGLE SOURCE link stabilization FEMTOSECOND SYNCHRONIZATION FOR LARGE-SCALE FACILITIES TAILOR-MADE FULLY INTEGRATED SOLUTIONS The Timing
More informationHIGH-PRECISION LASER MASTER OSCILLATORS FOR OPTICAL TIMING DISTRIBUTION SYSTEMS IN FUTURE LIGHT SOURCES
HIGH-PRECISION LASER MASTER OSCILLATORS FOR OPTICAL TIMING DISTRIBUTION SYSTEMS IN FUTURE LIGHT SOURCES Axel Winter, Peter Schmüser, Universität Hamburg, Hamburg, Germany, Frank Ludwig, Holger Schlarb,
More informationPerformance of the Prototype NLC RF Phase and Timing Distribution System *
SLAC PUB 8458 June 2000 Performance of the Prototype NLC RF Phase and Timing Distribution System * Josef Frisch, David G. Brown, Eugene Cisneros Stanford Linear Accelerator Center, Stanford University,
More informationBeam Diagnostics, Low Level RF and Feedback for Room Temperature FELs. Josef Frisch Pohang, March 14, 2011
Beam Diagnostics, Low Level RF and Feedback for Room Temperature FELs Josef Frisch Pohang, March 14, 2011 Room Temperature / Superconducting Very different pulse structures RT: single bunch or short bursts
More informationCavity Field Control - RF Field Controller. LLRF Lecture Part3.3 S. Simrock, Z. Geng DESY, Hamburg, Germany
Cavity Field Control - RF Field Controller LLRF Lecture Part3.3 S. Simrock, Z. Geng DESY, Hamburg, Germany Content Introduction to the controller Control scheme selection In-phase and Quadrature (I/Q)
More informationSub-ps (and sub-micrometer) developments at ELETTRA
Sub-ps (and sub-micrometer) developments at ELETTRA Mario Ferianis SINCROTRONE TRIESTE, Italy The ELETTRA laboratory ELETTRA is a 3 rd generation synchrotron light source in Trieste (I) since 1993 up to
More informationLow-Level RF. S. Simrock, DESY. MAC mtg, May 05 Stefan Simrock DESY
Low-Level RF S. Simrock, DESY Outline Scope of LLRF System Work Breakdown for XFEL LLRF Design for the VUV-FEL Cost, Personpower and Schedule RF Systems for XFEL RF Gun Injector 3rd harmonic cavity Main
More informationSynchronization Overview
Synchronization Overview S. Simrock, DESY ERL Workshop 2005 Stefan Simrock DESY What is Synchronization Outline Synchronization Requirements for RF, Laser and Beam Timing stability RF amplitude and phase
More informationTHE ORION PHOTOINJECTOR: STATUS and RESULTS
THE ORION PHOTOINJECTOR: STATUS and RESULTS Dennis T. Palmer SLAC / ARDB ICFA Sardinia 4 July 2002 1. Introduction 2. Beam Dynamics Simulations 3. Photoinjector 1. RF Gun 2. Solenoidal Magnet 3. Diagnostics
More information- RF Master-Reference Update (F.Ludwig, H.Weddig - DESY, K.Czuba - TU Warsaw) - Beam Stability Update (C.Gerth, F.Ludwig, G.
FLASH Meeting, 21/04/09 Beam Stability at FLASH - update F.Ludwig - DESY Content : - Motivation - RF Master-Reference Update (F.Ludwig, H.Weddig - DESY, K.Czuba - TU Warsaw) - Beam Stability Update (C.Gerth,
More informationFeedback Requirements for SASE FELS. Henrik Loos, SLAC IPAC 2010, Kyoto, Japan
Feedback Requirements for SASE FELS Henrik Loos, SLAC, Kyoto, Japan 1 1 Henrik Loos Outline Stability requirements for SASE FELs Diagnostics for beam parameters Transverse: Beam position monitors Longitudinal:
More information1550 nm Programmable Picosecond Laser, PM
1550 nm Programmable Picosecond Laser, PM The Optilab is a programmable laser that produces picosecond pulses with electrical input pulses. It functions as a seed pulse generator for Master Oscillator
More informationtaccor Optional features Overview Turn-key GHz femtosecond laser
taccor Turn-key GHz femtosecond laser Self-locking and maintaining Stable and robust True hands off turn-key system Wavelength tunable Integrated pump laser Overview The taccor is a unique turn-key femtosecond
More informationEUROFEL-Report-2006-DS EUROPEAN FEL Design Study
EUROFEL-Report-2006-DS3-034 EUROPEAN FEL Design Study Deliverable N : D 3.8 Deliverable Title: RF Amplitude and Phase Detector Task: Author: DS-3 F.Ludwig, M.Hoffmann, M.Felber, Contract N : 011935 P.Strzalkowski,
More informationUltrahigh precision synchronization of optical and microwave frequency sources
Journal of Physics: Conference Series PAPER OPEN ACCESS Ultrahigh precision synchronization of optical and microwave frequency sources To cite this article: A Kalaydzhyan et al 2016 J. Phys.: Conf. Ser.
More informationDesign considerations for the RF phase reference distribution system for X-ray FEL and TESLA
Design considerations for the RF phase reference distribution system for X-ray FEL and TESLA Krzysztof Czuba *a, Henning C. Weddig #b a Institute of Electronic Systems, Warsaw University of Technology,
More informationBeam Arrival Time Monitors. Josef Frisch, IBIC Sept. 15, 2015
Beam Arrival Time Monitors Josef Frisch, IBIC Sept. 15, 2015 Arrival Time Monitors Timing is only meaningful relative to some reference, and in general what matters is the relative timing of two different
More informationHigh-Power Femtosecond Lasers
High-Power Femtosecond Lasers PHAROS is a single-unit integrated femtosecond laser system combining millijoule pulse energies and high average power. PHAROS features a mechanical and optical design optimized
More informationFLASH Operation at DESY From a Test Accelerator to a User Facility
FLASH Operation at DESY From a Test Accelerator to a User Facility Michael Bieler FLASH Operation at DESY WAO2012, SLAC, Aug. 8, 2012 Vocabulary DESY: Deutsches Elektronen-Synchrotron, Hamburg, Germany
More informationOptical phase-coherent link between an optical atomic clock. and 1550 nm mode-locked lasers
Optical phase-coherent link between an optical atomic clock and 1550 nm mode-locked lasers Kevin W. Holman, David J. Jones, Steven T. Cundiff, and Jun Ye* JILA, National Institute of Standards and Technology
More informationHIGHER ORDER MODES FOR BEAM DIAGNOSTICS IN THIRD HARMONIC 3.9 GHZ ACCELERATING MODULES *
HIGHER ORDER MODES FOR BEAM DIAGNOSTICS IN THIRD HARMONIC 3.9 GHZ ACCELERATING MODULES * N. Baboi #, N. Eddy, T. Flisgen, H.-W. Glock, R. M. Jones, I. R. R. Shinton, and P. Zhang # # Deutsches Elektronen-Synchrotron
More informationOptical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers
Optical phase-locked loop for coherent transmission over 500 km using heterodyne detection with fiber lasers Keisuke Kasai a), Jumpei Hongo, Masato Yoshida, and Masataka Nakazawa Research Institute of
More informationDesigning for Femtosecond Pulses
Designing for Femtosecond Pulses White Paper PN 200-1100-00 Revision 1.1 July 2013 Calmar Laser, Inc www.calmarlaser.com Overview Calmar s femtosecond laser sources are passively mode-locked fiber lasers.
More informationFLASH: Status and upgrade
: Status and upgrade The User Facility Layout Performance and operational o a issues Upgrade Bart Faatz for the team DESY FEL 2009 Liverpool, UK August 23-28, 2009 at DESY > FEL user facility since summer
More informationSUPPLEMENTARY INFORMATION
Soliton-Similariton Fibre Laser Bulent Oktem 1, Coşkun Ülgüdür 2 and F. Ömer Ilday 2 SUPPLEMENTARY INFORMATION 1 Graduate Program of Materials Science and Nanotechnology, Bilkent University, 06800, Ankara,
More informationThe Theta Laser A Low Noise Chirped Pulse Laser. Dimitrios Mandridis
CREOL Affiliates Day 2011 The Theta Laser A Low Noise Chirped Pulse Laser Dimitrios Mandridis dmandrid@creol.ucf.edu April 29, 2011 Objective: Frequency Swept (FM) Mode-locked Laser Develop a frequency
More informationHigh Power and Energy Femtosecond Lasers
High Power and Energy Femtosecond Lasers PHAROS is a single-unit integrated femtosecond laser system combining millijoule pulse energies and high average powers. PHAROS features a mechanical and optical
More informationTECHNIQUES FOR PUMP-PROBE SYNCHRONISATION OF FSEC RADIATION PULSES
TECHNIQUES FOR PUMP-PROBE SYNCHRONISATION OF FSEC RADIATION PULSES Abstract The production of ultra-short photon pulses for UV, VUV or X-ray Free-Electron Lasers demands new techniques to measure and control
More informationTiming Noise Measurement of High-Repetition-Rate Optical Pulses
564 Timing Noise Measurement of High-Repetition-Rate Optical Pulses Hidemi Tsuchida National Institute of Advanced Industrial Science and Technology 1-1-1 Umezono, Tsukuba, 305-8568 JAPAN Tel: 81-29-861-5342;
More informationSUPPLEMENTARY INFORMATION DOI: /NPHOTON
Supplementary Methods and Data 1. Apparatus Design The time-of-flight measurement apparatus built in this study is shown in Supplementary Figure 1. An erbium-doped femtosecond fibre oscillator (C-Fiber,
More informationFLASH at DESY. FLASH. Free-Electron Laser in Hamburg. The first soft X-ray FEL operating two undulator beamlines simultaneously
FLASH at DESY The first soft X-ray FEL operating two undulator beamlines simultaneously Katja Honkavaara, DESY for the FLASH team FEL Conference 2014, Basel 25-29 August, 2014 First Lasing FLASH2 > First
More informationElectro-Optical Measurements at the Swiss Light Source (SLS) Linac at the PSI. First Results
Electro-Optical Measurements at the Swiss Light Source (SLS) Linac at the PSI First Results Overview motivation electro-optical sampling general remarks experimental setup synchronisation between TiSa-laser
More informationNew generation Laser amplifier system for FEL applications at DESY.
New generation Laser amplifier system for FEL applications at DESY. Franz Tavella Helmholtz-Institut-Jena Merging advanced solid-state Laser technology with FEL sources Helmholtz-Institut-Jena DESY F.
More informationSupplementary Information. All-fibre photonic signal generator for attosecond timing. and ultralow-noise microwave
1 Supplementary Information All-fibre photonic signal generator for attosecond timing and ultralow-noise microwave Kwangyun Jung & Jungwon Kim* School of Mechanical and Aerospace Engineering, Korea Advanced
More informationElectro-Optic Longitudinal Bunch Profile Measurements at FLASH: Experiment, Simulation, and Validation
Electro-Optic Longitudinal Bunch Profile Measurements at FLASH: Experiment, Simulation, and Validation Bernd Steffen, DESY FEL 2007 Novosibirsk, August 29th 2007 Electro-Optic Bunch Length Detection fs
More informationRF Locking of Femtosecond Lasers
RF Locking of Femtosecond Lasers Josef Frisch, Karl Gumerlock, Justin May, Steve Smith SLAC Work supported by DOE contract DE-AC02-76SF00515 1 Overview FEIS 2013 talk discussed general laser locking concepts
More informationDevelopment of Photocathode RF Gun No.
Development of Photocathode RF Gun No. - Development of Multi Pulse Laser System - Ryunosuke Kuroda Research Institute for Science and Engineering, Waseda University, Japan Outline Introduction Our Purpose
More informationDirectly 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 informationDrive Beam Photo-injector Option for the CTF3 Nominal Phase
CTF3 Review Drive Beam Photo-injector Option for the CTF3 Nominal Phase Motivation CTF3 Drive Beam Requirements CTF3 RF gun design The Laser (I. Ross / RAL) The Photocathode Cost estimate Possible schedule
More informationJørgen S. Nielsen Institute for Storage Ring Facilities, Aarhus, University of Aarhus Denmark
Jørgen S. Nielsen Institute for Storage Ring Facilities, Aarhus, University of Aarhus Denmark What is ISA? ISA operates and develops the storage ring ASTRID and related facilities ISA staff assist internal
More informationBorut Baricevic. Libera LLRF. 17 September 2009
Borut Baricevic Libera LLRF borut.baricevic@i-tech.si 17 September 2009 Outline Libera LLRF introduction Libera LLRF system topology Signal processing structure GUI and signal acquisition RF system diagnostics
More informationPerformance of the TTF Photoinjector Laser System
Performance of the TTF Photoinjector Laser System S. Schreiber, DESY Laser Issues for Electron Photoinjectors, October 23-25, 22, Stanford, California, USA & I. Will, A. Liero, W. Sandner, MBI Berlin Overview
More informationSetup 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 informationarxiv:physics/ v1 [physics.acc-ph] 18 Jul 2003
DESY 03 091 ISSN 0418-9833 July 2003 arxiv:physics/0307092v1 [physics.acc-ph] 18 Jul 2003 Two-color FEL amplifier for femtosecond-resolution pump-probe experiments with GW-scale X-ray and optical pulses
More informationModBox - Spectral Broadening Unit
ModBox - Spectral Broadening Unit The ModBox Family The ModBox systems are a family of turnkey optical transmitters and external modulation benchtop units for digital and analog transmission, pulsed and
More informationDemonstration of exponential growth and saturation at VUV wavelengths at the TESLA Test Facility Free-Electron Laser. P. Castro for the TTF-FEL team
Demonstration of exponential growth and saturation at VUV wavelengths at the TESLA Test Facility Free-Electron Laser P. Castro for the TTF-FEL team 100 nm 1 Å FEL radiation TESLA Test Facility at DESY
More informationBEAM ARRIVAL TIME MONITORS
BEAM ARRIVAL TIME MONITORS J. Frisch SLAC National Accelerator Laboratory, Stanford CA 94305, USA Abstract We provide an overview of beam arrival time measurement techniques for FELs and other accelerators
More informationUsing Higher Order Modes in the Superconducting TESLA Cavities for Diagnostics at DESY
Using Higher Order Modes in the Superconducting TESLA Cavities for Diagnostics at FLASH @ DESY N. Baboi, DESY, Hamburg for the HOM team : S. Molloy 1, N. Baboi 2, N. Eddy 3, J. Frisch 1, L. Hendrickson
More informationTIGER Femtosecond and Picosecond Ti:Sapphire Lasers. Customized systems with SESAM technology*
TIGER Femtosecond and Picosecond Ti:Sapphire Lasers Customized systems with SESAM technology* www.lumentum.com Data Sheet The TIGER femtosecond and picosecond lasers combine soliton mode-locking, a balance
More informationExtending the Offset Frequency Range of the D2-135 Offset Phase Lock Servo by Indirect Locking
Extending the Offset Frequency Range of the D2-135 Offset Phase Lock Servo by Indirect Locking Introduction The Vescent Photonics D2-135 Offset Phase Lock Servo is normally used to phase lock a pair of
More informationLinac Coherent Light Source (LCLS) Low Level RF Status LCLS FAC. October 30, 2007
Linac Coherent Light Source (LCLS) Low Level RF Status LCLS Emma LCLS RF Gun, L0, and L1 Emma Dual Feed L0A L0B L0A 57MV 19MV/m L0B 72MV 24MV/m Off Axis Injector Vault Injector Transverse Accelerator 55cm
More informationSCS Optical Laser Delivery
SCS Optical Laser Delivery Robert Carley Instrument Scientist SCS Group Schenefeld, 23 January 2017 2 Overiew Pump-probe laser at European XFEL Laser system Burst mode operation Sample heating SCS optical
More informationSpectral Phase Modulation and chirped pulse amplification in High Gain Harmonic Generation
Spectral Phase Modulation and chirped pulse amplification in High Gain Harmonic Generation Z. Wu, H. Loos, Y. Shen, B. Sheehy, E. D. Johnson, S. Krinsky, J. B. Murphy, T. Shaftan,, X.-J. Wang, L. H. Yu,
More informationPLL Synchronizer User s Manual / Version 1.0.6
PLL Synchronizer User s Manual / Version 1.0.6 AccTec B.V. Den Dolech 2 5612 AZ Eindhoven The Netherlands phone +31 (0) 40-2474321 / 4048 e-mail AccTecBV@tue.nl Contents 1 Introduction... 3 2 Technical
More informationGFT1012 2/4 Channel Precise Slave Generator
Features Two Independent Delay Channels (Four channels available as an option) 1 ps Time Resolution < 5 ps RMS Jitter (Slave-to-Slave) < 6 ps / C Drift (Slave-to-slave) 1 Second Range Output Pulse Up to
More informationLaser Transmitter Adaptive Feedforward Linearization System for Radio over Fiber Applications
ASEAN IVO Forum 2015 Laser Transmitter Adaptive Feedforward Linearization System for Radio over Fiber Applications Authors: Mr. Neo Yun Sheng Prof. Dr Sevia Mahdaliza Idrus Prof. Dr Mohd Fua ad Rahmat
More informationINSTALLATION AND FIRST COMMISSIONING OF THE LLRF SYSTEM
INSTALLATION AND FIRST COMMISSIONING OF THE LLRF SYSTEM FOR THE EUROPEAN XFEL Julien Branlard, for the LLRF team TALK OVERVIEW 2 Introduction Brief reminder about the XFEL LLRF system Commissioning goals
More informationModBox-1310nm-1550nm-NRZ 1310nm & 1550 nm, 28 Gb/s, 44 Gb/s Reference Transmitters
light.augmented ModBox-1310nm-1550nm-NRZ The -1310nm-1550nm-NRZ series is a family of Reference Transmitters that generate at 1310 nm and 1550 nm excellent quality NRZ optical data streams up to 28 Gb/s,
More informationDevelopment of utca Hardware for BAM system at FLASH and XFEL
Development of utca Hardware for BAM system at FLASH and XFEL Samer Bou Habib, Dominik Sikora Insitute of Electronic Systems Warsaw University of Technology Warsaw, Poland Jaroslaw Szewinski, Stefan Korolczuk
More informationLaser systems for science instruments
European XFEL Users Meeting 27-20 January 2016, Main Auditorium (Bldg. 5), DESY, Hamburg Laser systems for science instruments M. J. Lederer WP78, European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg,
More informationMeasurements 2: Network Analysis
Measurements 2: Network Analysis Fritz Caspers CAS, Aarhus, June 2010 Contents Scalar network analysis Vector network analysis Early concepts Modern instrumentation Calibration methods Time domain (synthetic
More informationModBox-OBand-56GBaud-PAM4 O-Band, 56 Gbaud PAM-4 Reference Transmitter
-OBand-5GBaud-PAM4 O-Band, 5 Gbaud PAM-4 Reference Transmitter The -OBand-5Gbaud-PAM4 is a 4-level Pulse Amplitude Modulation (PAM-4) Optical Reference Transmitter that generates in the O-band excellent
More informationA 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating
LETTER IEICE Electronics Express, Vol.14, No.19, 1 10 A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 µm Koudai Harako a), Masato Yoshida, Toshihiko Hirooka, and Masataka
More informationLow Phase Noise Laser Synthesizer with Simple Configuration Adopting Phase Modulator and Fiber Bragg Gratings
ALMA Memo #508 Low Phase Noise Laser Synthesizer with Simple Configuration Adopting Phase Modulator and Fiber Bragg Gratings Takashi YAMAMOTO 1, Satoki KAWANISHI 1, Akitoshi UEDA 2, and Masato ISHIGURO
More informationVELA PHOTOINJECTOR LASER. E.W. Snedden, Lasers and Diagnostics Group
VELA PHOTOINJECTOR LASER E.W. Snedden, Lasers and Diagnostics Group Contents Introduction PI laser step-by-step: Ti:Sapphire oscillator Regenerative amplifier Single-pass amplifier Frequency mixing Emphasis
More informationOptoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links
Optoelectronic Oscillator Topologies based on Resonant Tunneling Diode Fiber Optic Links Bruno Romeira* a, José M. L Figueiredo a, Kris Seunarine b, Charles N. Ironside b, a Department of Physics, CEOT,
More informationSuppression of amplitude-to-phase noise conversion in balanced optical-microwave phase detectors
Suppression of amplitude-to-phase noise conversion in balanced optical-microwave phase detectors Maurice Lessing, 1,2 Helen S. Margolis, 1 C. Tom A. Brown, 2 Patrick Gill, 1 and Giuseppe Marra 1* Abstract:
More informationGlossary of VCO terms
Glossary of VCO terms VOLTAGE CONTROLLED OSCILLATOR (VCO): This is an oscillator designed so the output frequency can be changed by applying a voltage to its control port or tuning port. FREQUENCY TUNING
More informationOptical Measurements in 100 and 400 Gb/s Networks: Will Coherent Receivers Take Over? Fred Heismann
Optical Measurements in 100 and 400 Gb/s Networks: Will Coherent Receivers Take Over? Fred Heismann Chief Scientist Fiberoptic Test & Measurement Key Trends in DWDM and Impact on Test & Measurement Complex
More informationLLRF Operation and Performance of the European XFEL. An overview
LLRF Operation and Performance of the European XFEL. An overview Mathieu Omet LLRF, Barcelona, 16.10.2017 Contents > Introduction > LLRF commissioning > Energy Reach > LLRF performance > Summary / Outlook
More information레이저의주파수안정화방법및그응용 박상언 ( 한국표준과학연구원, 길이시간센터 )
레이저의주파수안정화방법및그응용 박상언 ( 한국표준과학연구원, 길이시간센터 ) Contents Frequency references Frequency locking methods Basic principle of loop filter Example of lock box circuits Quantifying frequency stability Applications
More informationLasers 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 informationProgress 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 informationElimination 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 informationDirect Digital Down/Up Conversion for RF Control of Accelerating Cavities
Direct Digital Down/Up Conversion for RF Control of Accelerating Cavities C. Hovater, T. Allison, R. Bachimanchi, J. Musson and T. Plawski Introduction As digital receiver technology has matured, direct
More informationTIME-PRESERVING MONOCHROMATORS FOR ULTRASHORT EXTREME-ULTRAVIOLET PULSES
TIME-PRESERVING MONOCHROMATORS FOR ULTRASHORT EXTREME-ULTRAVIOLET PULSES Luca Poletto CNR - Institute of Photonics and Nanotechnologies Laboratory for UV and X-Ray Optical Research Padova, Italy e-mail:
More information12/08/2003 H. Schlarb, DESY, Hamburg
K. Bane, F.-J. Decker, P. Emma, K. Hacker, L. Hendrickson,, C. L. O Connell, P. Krejcik,, H. Schlarb*, H. Smith, F. Stulle*, M. Stanek, SLAC, Stanford, CA 94025, USA * σ z NDR 6 mm 1.2 mm 3-stage compression
More informationA n optical frequency comb (OFC), a light source whose spectrum consists of a series of discrete, equally
OPEN SUBJECT AREAS: MICROWAVE PHOTONICS OPTOELECTRONIC DEVICES AND COMPONENTS Received 17 July 2013 Accepted 29 November 2013 Published 16 December 2013 Correspondence and requests for materials should
More informationPCS-150 / PCI-200 High Speed Boxcar Modules
Becker & Hickl GmbH Kolonnenstr. 29 10829 Berlin Tel. 030 / 787 56 32 Fax. 030 / 787 57 34 email: info@becker-hickl.de http://www.becker-hickl.de PCSAPP.DOC PCS-150 / PCI-200 High Speed Boxcar Modules
More informationsmall signal linear gain G s is: More realistically, oscillation occurs at frequencies where the G 2 Oscillation frequency is controlled by
VOLTAGE CONTROLLED OSCILLATORS (VCOs) VCOs are RF oscillators whose actual output frequency can be controlled by the voltage present at a control (tuning) port. Barkhausen Criterion: Systems breaks into
More informationIntegrated 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 informationThe Proposed MIT X-ray Laser Facility: Laser Seeding to Achieve the Transform Limit
MIT X-ray Laser Project The Proposed MIT X-ray Laser Facility: Laser Seeding to Achieve the Transform Limit 30 or more independent beamlines Fully coherent milli-joule pulses at khz rates Wavelength range
More informationPN9000 PULSED CARRIER MEASUREMENTS
The specialist of Phase noise Measurements PN9000 PULSED CARRIER MEASUREMENTS Carrier frequency: 2.7 GHz - PRF: 5 khz Duty cycle: 1% Page 1 / 12 Introduction When measuring a pulse modulated signal the
More informationModBox-SB-NIR Near Infra Red Spectral Broadening Unit
The Spectral Broadening ModBox achieves the broadening of an optical signal by modulating its phase via the mean of a very efficient LiNb0 3 phase modulator. A number of side bands are created over a spectral
More information