Improved Radiometry for LED Arrays
|
|
- Duane Cook
- 5 years ago
- Views:
Transcription
1 RadTech Europe 2017 Prague, Czech Republic Oct. 18, 2017 Improved Radiometry for LED Arrays Dr. Robin E. Wright 3M Corporate Research Process Laboratory, retired 3M 2017 All Rights Reserved. 1
2 Personal Background Studied photochemistry of 1 st row transition metal complexes Used visible monochromatic sources (Ar +, Kr +, and doubled Nd-YAG laser) Post-doctoral in organometallic photochemistry in Regensburg Used filters/monochromator to select narrow spectral bands Joined 3M s Central Research Laboratory in 1979 in St. Paul, MN Used broadband medium-pressure arc and microwave mercury lamps Radiometry was radically different with no established standards Cured using excimer ( 93) and low-pressure Hg lamps ( 96) and LEDs ( 01) Radiometry using a narrowband source is straight forward and more believable Cure gradients based on absorbance can be calculated/evaluated 3M 2017 All Rights Reserved. 2
3 Medium-Pressure (MP) Mercury Lamp Spectrum MP mercury lamp UV emission spans from ca. 220 to 400 nm Filters are used to isolate different spectral bands (UVA, UVB, UVC) Transmission curves are not standardized between radiometer manufacturers Calibration using a MP Hg lamp is required but what is a standard MP Hg lamp? Spectrum can vary due to temperature, quartz type, reflector composition, additives, etc. Generic mercury bulb spectrum 3M 2017 All Rights Reserved. 3
4 Light-Emitting Diodes (LEDs) LEDs emit within a narrow spectral range ( max ±25nm) LED spectra are similar to excimer lamp spectra and can be considered as pseudo-monochromatic sources Filters to isolate LED emission bands are not necessary Arrays of >340 nm can exceed peak irradiances of 50 mw/cm 2 Background lighting can often be neglected XeCl excimer lamp Ensemble of discrete electrical discharges max = 308 nm LED array Ensemble of individual LEDs max = 395 nm 3M 2017 All Rights Reserved. 4
5 Conventional UV Radiometers UV radiometers use Si photodiodes Advantages Fast response time Good linearity Disadvantages Saturate at high power Sensitivity degrades with UV exposure UV responsivity decreases as temperature increases Spectral responsivity is strongly dependent on wavelength Calibration recommended every 6-12 months 3M 2017 All Rights Reserved. 5
6 Examples of Two Silicon Photodiode Responsivity Curves Company A Company B nm Spectral Region 3M 2017 All Rights Reserved. 6
7 Problem Statement There are no standard methodologies for measuring radiant power impinging on a surface (irradiance) from LED arrays Results can vary dramatically depending on the distance from the source, the array configuration, and the detector responsivity Use of Hg spectral band definitions (UVA, UVB, UVC, etc.) makes no sense when measuring narrowband LED arrays 2014 NIST study requested by RadTech showed that measuring the same LED source using two radiometers from different suppliers resulted in a 30% difference in the reported peak irradiances 3M 2017 All Rights Reserved. 7
8 RadTech Global Initiative (2014) National metrology lamps asked to help standardize LED array measurements for industry No progress reported after more than 6 months 3M 2017 All Rights Reserved. 8
9 Lasers LED spectra are more similar to lasers than MP Hg lamps Lasers are coherent sources; LEDs are incoherent sources Laser power is measured using power meters Power meters use sensors that absorb radiation in combination with a thermopile 3M 2017 All Rights Reserved. 9
10 Thermopile Technology Thermopiles convert thermal energy into electrical energy Output is proportional to a local temperature difference or gradient Advantages Flat spectral response High saturation threshold Disadvantages Slow response time Sensitive to ambient temperature changes Could thermopile technology be used with LED arrays? 3M 2017 All Rights Reserved. 10
11 Coherent PowerMax-Pro Laser Power Meter Controller Sensor head Computer Display 3M 2017 All Rights Reserved. 11
12 Use of PowerMax-Pro with LED Sources Static LED Measurements Reported by Coherent, Inc. Measured performance characteristics of LED s for resin curing Typical rise-time Optical measurements in 10 µsec Measurement insights Improve battery and diode lifetimes Insure ISO ( ) or FDA compliance Adjust exposure parameters (power & energy) for optimum resin curing We love it! It is the first time we ve actually been able to see the needed resolutions on our output and will now be able to verify and validate tracing directly back to a NIST traceable meter. This is big for us! Customer comment 3M 2017 All Rights Reserved. 12
13 3M Measurement of 365 nm LED Array Stabilization Time Total exposure time was 15 minutes (~ 1500 J/cm 2 ) Standard mode (10 Hz) (water cooling required) 3M 2017 All Rights Reserved. 13
14 Coherent PowerMax-Pro vs. Conventional Thermopiles Transverse Thermoelectric Physics conventional Sensor Response Time Atomic layer thermopiles PowerMax-Pro t rise Diameter 2 Conventional Thermopile t rise (Thickness) 2 Coherent Thermopile Could this technology be adapted to be a profiling radiometer? 3M 2017 All Rights Reserved. 14
15 Attributes of PowerMax-Pro PowerMax-Pro uses an anisotropic thermoelectric sensing element that eliminates the negatives of conventional thermopiles Advantages High sensitivity Fast response time ( 10 µsec) Saturation threshold in excess of 200 W/cm 2 Flat responsivity curve 20 khz sampling rate Option to water cool for continuous exposures Disadvantages New and unproven 3M 2017 All Rights Reserved. 15
16 Use of PowerMax as a Profiling Radiometer for LED Arrays Coherent demonstrated a static response using LED spot sources Question - could it be used as a profiling radiometer for LED arrays? Discussed concept with NIST and received favorable feedback no obvious pitfalls Negatives of original Coherent device Sensor is tethered to a controller by a 2m cable Sensor is recessed 0.95 cm from top surface Total height of sensor was 33 mm Reflectance from sensor surface was a concern Original Coherent sensor Inquired about use of a black body absorber as a sensing element to minimize dependence 3M 2017 All Rights Reserved. 16
17 First Generation Black Body Absorber Black Body (BB) Absorber vs Si Photodiode Photoresponsivity Curve Normalized Responsivity at 400 nm Responsivity Curves ( nm) BB Absorber Si Photodiode BB Absorber Si Photodiode Data provided by Coherent, Inc. 3M 2017 All Rights Reserved. 17
18 Original and Low Profile (LP) Black Body Sensors Evaluated Black Body (BB) absorber in original sensor head BB original and low profile sensor with 1.0 cm 2 aperture Edge view of LP and original heads (height = 13 mm vs. 30 mm) 3M 2017 All Rights Reserved. 18
19 Profiling Mode Video 3M 2017 All Rights Reserved. 19
20 Profiling Mode Screenshot high speed mode 3M 2017 All Rights Reserved. 20
21 Single Pass Video Used LED flashlight as source Setup: Trigger = 10 mw Pre-trigger = 1000 Buffer capacity = Sampling rate = 20 khz X-axis is time; Y-axis shows irradiance 3M 2017 All Rights Reserved. 21
22 Comparative Study at 3M Experimental Setup Laser Power Meter Comparative Radiometer 3M 2017 All Rights Reserved. 22
23 Original and BB absorber data are similar Comparative response at 365 nm is lower Calibration issue? 3M 2017 All Rights Reserved. 23
24 Original and BB absorber data are the same UVA Comparative is similar 3M 2017 All Rights Reserved. 24
25 Original and BB absorber data are similar Comparative response is lower UVA filter is calibrated at 365 nm, not 340 nm 3M 2017 All Rights Reserved. 25
26 Original and BB absorber data are similar UVA, UVV Comparative responses are low due to %T 385 Calibration difference with UVA2? 3M 2017 All Rights Reserved. 26
27 BB absorber data Comparative filter %T at 395 nm is lower 3M 2017 All Rights Reserved. 27
28 Original and BB absorber data are similar Comparative UVV %T 455 is zero 3M 2017 All Rights Reserved. 28
29 PowerMax-Pro Data as a Function of Linespeed 3M 2017 All Rights Reserved. 29
30 Summary A laser power meter from Coherent has been successfully used as a profiling radiometer for LED arrays with promising results A low-profile version (13 mm height) using a black body absorber has been tested Suggested improvements Eliminate tether from detector to controller Add internal battery Provide onboard data storage and wireless data link Current status Coherent is evaluating production, stability, and business opportunity 3M 2017 All Rights Reserved. 30
31 Special thanks to Coherent s Sean Bergman and Michael Pease 3M 2017 All Rights Reserved. 31
32 3M 2017 All Rights Reserved. 32
The Importance of Total Measured Optic Response in UV LED Measurement. Joe May, Jim Raymont, Mark Lawrence EIT Instrument Markets
The Importance of Total Measured Optic Response in UV LED Measurement Joe May, Jim Raymont, Mark Lawrence EIT Instrument Markets October 18, 2017 Measurement Expectations Temperature Industrial thermometry:
More informationAdvances in Measuring UV LED Arrays
Advances in Measuring UV LED Arrays Joe May, Jim Raymont, Mark Lawrence EIT Instrument Markets May 8, 2018 Measurement Expectations Temperature Industrial thermometry: 1% accuracy Laboratory thermometry:
More informationMeasuring the Performance of UV LED Light Sources
Measuring the Performance of UV LED Light Sources Sink or Swim June 5, 2018 Jim Raymont EIT Instrument Markets Measurement Expectations Temperature Industrial thermometry: 1% accuracy Laboratory thermometry:
More informationGLOSSARY OF TERMS. Terminology Used for Ultraviolet (UV) Curing Process Design and Measurement
GLOSSARY OF TERMS Terminology Used for Ultraviolet (UV) Curing Process Design and Measurement This glossary of terms has been assembled in order to provide users, formulators, suppliers and researchers
More informationThe use of ultraviolet (UV) energy
Curing of Printing Inks by UV Technical Paper By Jim Raymont The use of ultraviolet (UV) energy is what differentiates UV-cured inks from water or solventbased inks. While a UV ink is dry to the touch
More informationUV-dose indicator formulations as paint-onphotodetectors: way to optimize the UV curing process
UV-dose indicator formulations as paint-onphotodetectors: A convenient and quantitative way to optimize the UV curing process Katia Studer, Caroline Lordelot, Tunja Jung, Kurt Dietliker, Urs Lehmann, Peter
More informationInfluence of the light spectral distribution used in the radiometers calibration
Influence of the light spectral distribution used in the radiometers calibration J C Moraes and L O Guerra Allergisa Pesquisa Dermato-Cosmética Ltda GRUPO INVESTIGA, 452. Dr. Romeu Tórtima Avenue, Postcode:
More informationSilicon Photodiodes - SXUV Series with Platinum Silicide Front Entrance Windows
Silicon Photodiodes - SXUV Series with Platinum Silicide Front Entrance Windows SXUV Responsivity Stability It is known that the UV photon exposure induced instability of common silicon photodiodes is
More informationEIT Instrument Markets Product Overview
EIT Instrument Markets Product Overview Efsen Wood Seminar Warsaw, Poland October 25, 2017 uv@eit.com www.eit.com efsen@efsen.com.dk www.efsen.com.dk Topics 1. EIT Overview 2. Legacy & Obsolete Products
More informationAdvancements in shorter wavelength LED technology and its impact on UV curing applications.
Advancements in shorter wavelength LED technology and its impact on UV curing applications. P.K. Swain, D. Leonhardt, B. Skinner, D. Skinner : Heraeus Noblelight America LLC RadTech Europe 2017, October
More informationAdvanced Radiachromic Radiometry for UV Curing
Advanced Radiachromic Radiometry for UV Curing R. W. Stowe and J. W. Guarniere Fusion UV Systems, Inc. Gaithersburg, MD, USA Abstract An advanced study of the use of instrument-resolved radiachromic radiometry
More informationHeadquaters Dr. Hönle AG
UV and UV-LEDs for Inkjet Printing Headquaters Dr. Hönle AG 40 years UV experience / 15 years inkjet experience Turnover 93 Mio Euro / 550 employees More than 8.000 UV systems for inkjet in operation Exclusive
More informationNovel laser power sensor improves process control
Novel laser power sensor improves process control A dramatic technological advancement from Coherent has yielded a completely new type of fast response power detector. The high response speed is particularly
More informationvariables that must be controlled when
P R O D U C T I O N UVacise-Hands-On Exercises to Better Understand Your UV System, UV Measuring Instruments and UV Process The purpose of UVacise is to understand the variables that must be controlled
More informationSolving UV Curing Mysteries with Measurement. Jim Raymont
Solving UV Curing Mysteries with Measurement Jim Raymont October 25, 2017 Agenda UV Overview Measurement Lessons Repeat the same mistake and not learn Learn from your mistake The smartest person learns
More informationAspects of Radiometry and Process Verification for 3-D UV Processing
Aspects of Radiometry and Process Verification for 3-D UV Processing R. W. Stowe, Fusion UV Systems, Inc., USA [Presented at RadTech Europe 2003; Berlin Germany, November 3-5, 2003] Abstract As larger
More informationPOWER DETECTORS. How they work POWER DETECTORS. Overview
G E N T E C - E O POWER DETECTORS Well established in this field for over 30 years Gentec Electro-Optics has been a leader in the field of laser power and energy measurement. The average power density
More informationKeysight Technologies Optical Power Meter Head Special Calibrations. Brochure
Keysight Technologies Optical Power Meter Head Special Calibrations Brochure Introduction The test and measurement equipment you select and maintain in your production and qualification setups is one of
More informationSPECTRAL IRRADIANCE DATA
The radiometric data on the following pages was measured in our Standards Laboratory. The wavelength calibrations are based on our spectral calibration lamps. Irradiance data from 250 to 2500 nm is based
More information\Ç à{x ÇtÅx Éy ALLAH à{x `xüv yâä
\Ç à{x ÇtÅx Éy ALLAH à{x `xüv yâä Ultraviolet Radiation from Some Types of Outdoor Lighting Lamps Dr.Essam El-Moghazy Photometry and Radiometry division, National Institute for Standards (NIS), Egypt.
More informationModern UV-curing technology
Spectroradiometry in UV Curing By Lawrence E. Schmutz Figure 1 Absorption spectra for two common photoinitiator families (Spectra reproduced by permission of Sigma-Aldrich Corporation) Modern UV-curing
More informationUV PROCESS SUPPLY, INC. CON-TROL-CURE COMPACT RADIOMETER INSTRUCTION MANUAL PART # M
1 The Compact Radiometer is a self captained UV dose measuring instrument designed with a low profile for use in UV curing ovens, printed circuit (photoresist) and printing plate exposure systems. The
More informationMulti-Lamp Microwave UV Systems Physics and Technology
Multi-Lamp Microwave UV Systems Physics and Technology By Vlad Danilychev Fig. 1. Basic Idea of Multi-Lamp Microwave UV Light Source. UV Industry - New needs. Single-Lamp Microwave UV System is well known
More informationLaser Beam Analysis Using Image Processing
Journal of Computer Science 2 (): 09-3, 2006 ISSN 549-3636 Science Publications, 2006 Laser Beam Analysis Using Image Processing Yas A. Alsultanny Computer Science Department, Amman Arab University for
More informationRecent Advances in Measuring UV LED Arrays
Recent Advances in Measuring UV LED Arrays Joe T. May, Jim Raymont 1, Mark L. Lawrence EIT Instrument Markets, Leesburg, VA UV LED sources and the applications in which they are used are changing and expanding.
More informationUltraviolet Visible Infrared Instrumentation
Ultraviolet Visible Infrared Instrumentation Focus our attention on measurements in the UV-vis region of the EM spectrum Good instrumentation available Very widely used techniques Longstanding and proven
More informationUV Measurement. Information Sheet. Dipl.-Ing. Andreas Renzel. Basics of UV measurement and solutions for UV curing applications.
Dipl.-Ing. Andreas Renzel UV Measurement Basics of UV measurement and solutions for UV curing applications Contents: 1 Introduction.... 1 2 The electromagnetic spectrum........ 2 3 Radiation sources for
More informationUltraviolet (UV-Index) TOCON Datasheets
Ultraviolet (UV-Index) TOCON Datasheets UV photodiode with integrated preamplifier SiC based UV sensors with 0 to 5 V voltage output measures intensities from 1.8pW/cm² up to 18W/cm² 91 Boylston Street,
More informationSECOND HARMONIC GENERATION AND Q-SWITCHING
SECOND HARMONIC GENERATION AND Q-SWITCHING INTRODUCTION In this experiment, the following learning subjects will be worked out: 1) Characteristics of a semiconductor diode laser. 2) Optical pumping on
More informationImproving the Collection Efficiency of Raman Scattering
PERFORMANCE Unparalleled signal-to-noise ratio with diffraction-limited spectral and imaging resolution Deep-cooled CCD with excelon sensor technology Aberration-free optical design for uniform high resolution
More informationThe ultraviolet (UV)-light emitting
Technology The Leader of UVLED Curing System in China UV-LED Curing Systems: Not Created Equal By Sara Jennings, Bonnie Larson and Chad Taggard Table 1 The ultraviolet (UV)-light emitting diode (LED) curing
More informationThermal Heads for Power and Single-Shot Energy - mw to KW, mj to 300J
Thermal Heads for Power and Single-Shot Energy - mw to KW, mj to 300J The highest damage threshold in the industry Models for 1500W, 5000W and 10KW for high power laser measurement LP coating that can
More informationUV LED ILLUMINATION STEPPER OFFERS HIGH PERFORMANCE AND LOW COST OF OWNERSHIP
UV LED ILLUMINATION STEPPER OFFERS HIGH PERFORMANCE AND LOW COST OF OWNERSHIP Casey Donaher, Rudolph Technologies Herbert J. Thompson, Rudolph Technologies Chin Tiong Sim, Rudolph Technologies Rudolph
More informationWhodat? Whodunit? Mysteries with Measurement. Solving. Jim Raymont
Whodunit? Solving Whodat? UV Curing Jim Raymont Mysteries with Measurement Solving UV Mysteries Anything that you can measure, you have a better chance of controlling. Things that you do not measure become
More informationPyroelectric, Photodiode and RP Heads for Repetitive Energy Measurements
Pyroelectric, Photodiode and RP Heads for Repetitive Energy Measurements Pyroelectric and Photodiode Heads RP Heads For latest updates please visit our website: www.ophiropt.com 1 Pyroelectric and Photodiode
More informationCompact High Intensity Light Source
Compact High Intensity Light Source General When a broadband light source in the ultraviolet-visible-near infrared portion of the spectrum is required, an arc lamp has no peer. The intensity of an arc
More informationRadiometric Methods for UV Process Design and Process Monitoring
Radiometric Methods for UV Process Design and Process Monitoring R. W. Stowe Fusion UV Systems, Inc., USA [Presented at RadTech North America 2002, Indianapolis, IN; April 9-12, 2002] [Published in The
More informationNew PCA Accessory for the Q Series DSC Modules
New PCA Accessory for the Q Series DSC Modules G. Dallas Ph.D. and C. G. Slough Ph.D. TA Instruments, 109 Lukens Drive, New Castle, DE 19720, USA ABSTRACT The PCA is a compact, modular photocalorimeter
More informationContact person Date Reference Page Stefan Källberg MTt6F (4) Measurement Technology
Contact person Stefan Källberg 2016-02-24 MTt6F004223-02 1 (4) Measurement Technology +46 10 516 56 26 stefan.kallberg@sp.se Hedson Technologies AB Box 1530 SE-462 28 VÅNERSBORG Measurement of optical
More informationValidating a Conveyor Light-Curing Process Ensure Your Light-Curing Process Will Perform Accurately Every Time
Validating a Conveyor Light-Curing Process Ensure Your Light-Curing Process Will Perform Accurately Every Time Since their initial introduction into manufacturing processes over 30 years ago, light-curable
More informationOriel Flood Exposure Sources
218 Oriel Flood Exposure Sources High intensity outputs CALIBRATION SOURCES Highly uniform, large collimated beams Efficient out of band rejection Timed exposures DEUTERIUM SOURCES ARC SOURCES INCANDESCENT
More informationLithography. 3 rd. lecture: introduction. Prof. Yosi Shacham-Diamand. Fall 2004
Lithography 3 rd lecture: introduction Prof. Yosi Shacham-Diamand Fall 2004 1 List of content Fundamental principles Characteristics parameters Exposure systems 2 Fundamental principles Aerial Image Exposure
More informationUV-Index Photodiodes Data Sheets
UV-Index Photodiodes Data Sheets For UV-Index measurement according ot CIE087, 3 % error only = most precise currently available detector, cosine corrected, different packagings, sorted by detector areas.
More informationPulsed Laser Power Measurement Systems
Pulsed Laser Power Measurement Systems Accurate, reproducible method of determining total laser and laser diode power Ideal for Beam Power Measurement Labsphere s Pulsed Laser Power Measurement Systems
More informationOmniCure Setting the Standard for Precision Assembly UV Curing
OmniCure Setting the Standard for Precision Assembly UV Curing Power Precision Control Repeatability The Preferred Choice of Precision Manufacturers Manufacturers in advanced technology sectors around
More informationInstruction manual and data sheet ipca h
1/15 instruction manual ipca-21-05-1000-800-h Instruction manual and data sheet ipca-21-05-1000-800-h Broad area interdigital photoconductive THz antenna with microlens array and hyperhemispherical silicon
More informationNIST EUVL Metrology Programs
NIST EUVL Metrology Programs S.Grantham, C. Tarrio, R.E. Vest, Y. Barad, S. Kulin, K. Liu and T.B. Lucatorto National Institute of Standards and Technology (NIST) Gaithersburg, MD USA L. Klebanoff and
More informationSUCCESSFUL UV CURING & COMMUNICATION FOR PRESSURE SENSITIVE ADHESIVES (PSAS) It s as simple as a Day at the Movies
SUCCESSFUL UV CURING & COMMUNICATION FOR PRESSURE SENSITIVE ADHESIVES (PSAS) It s as simple as a Day at the Movies By Jim Raymont & Paul Mills, EIT Instrument Markets, Sterling, VA Introduction Pressure
More informationPowerMax-Pro Sensors. 100 mw to 150W FEATURES
PowerMax-Pro Sensors PowerMax-Pro (Patent #9,012,848) represents a dramatic technological advancement in laser power sensing that combines the broad wavelength sensitivity, dynamic range and laser damage
More informationOptical Isolator Tutorial (Page 1 of 2) νlh, where ν, L, and H are as defined below. ν: the Verdet Constant, a property of the
Aspheric Optical Isolator Tutorial (Page 1 of 2) Function An optical isolator is a passive magneto-optic device that only allows light to travel in one direction. Isolators are used to protect a source
More informationAlternative UV Radiometry and Process Verification for Difficult Configurations
Alternative UV Radiometry and Process Verification for Difficult Configurations R. W. Stowe Fusion UV Systems, Inc. Gaithersburg, MD 2878 USA ABSTRACT: Traditional UV radiometry typically uses instruments
More informationNew automated laser facility for detector calibrations
CORM annual conference, NRC, Ottawa, CANADA June 1, 2012 New automated laser facility for detector calibrations Yuqin Zong National Institute of Standards and Technology Gaithersburg, Maryland USA Overview
More informationidonus UV-LED exposure system for photolithography
idonus UV-LED exposure system for photolithography UV-LED technology is an attractive alternative to traditional arc lamp illumination. The benefits of UV-LEDs are manyfold and significant for photolithography.
More informationTechnical Notes. Integrating Sphere Measurement Part II: Calibration. Introduction. Calibration
Technical Notes Integrating Sphere Measurement Part II: Calibration This Technical Note is Part II in a three part series examining the proper maintenance and use of integrating sphere light measurement
More informationEYP-DFB BFY02-0x0x
102 26.06.2014 DATA SHEET Revision 1.02 26.06.2014 page 1 from 5 General Product Information Product Application 760 nm DFB Laser with hermetic Butterfly Housing Spectroscopy Monitor Diode, Thermoelectric
More informationUniform surface Led series SFL-UV
Uniform surface Led series SFL-UV New: digital remote controllable UV-LED SFL-UV-L UV-LED SFL-UV-M UV-LED SFL-UV-S High UV irradiance combined with a uniform irradiated area is the key feature of the surface
More informationEYP-DFB BFY02-0x0x
DATA SHEET 102 page 1 of 5 General Product Information Product Application 1064 nm DFB Laser with hermetic Butterfly Housing Spectroscopy Monitor Diode, Thermoelectric Cooler and Thermistor Metrology PM
More informationPart 1: New spectral stuff going on at NIST. Part 2: TSI Traceability of TRF to NIST
Part 1: New spectral stuff going on at NIST SIRCUS-type stuff (tunable lasers) now migrating to LASP Absolute Spectrally-Tunable Detector-Based Source Spectrally-programmable source calibrated via NIST
More informationMercury Cadmium Telluride Detectors
Mercury Cadmium Telluride Detectors ISO 9001 Certified J15 Mercury Cadmium Telluride Detectors (2 to 26 µm) General HgCdTe is a ternary semiconductor compound which exhibits a wavelength cutoff proportional
More informationNovel Beam Diagnostics Improve Laser Additive Manufacturing
A Coherent Whitepaper November 17, 2016 Novel Beam Diagnostics Improve Laser Additive Manufacturing Laser additive manufacturing (LAM) is rapidly becoming an important method for the fabrication of both
More informationNovel Beam Diagnostics Improve Laser Additive Manufacturing
White Paper Novel Beam Diagnostics Improve Laser Additive Manufacturing Laser additive manufacturing (LAM) is rapidly becoming an important method for the fabrication of both prototype and production metal
More informationTypical LED Characteristics
Typical LED Characteristics Characteristic Unit Value Light output 1 mw > 1 2 Peak wavelength 3 nm 255 nm to 28 nm 4 Viewing angle Degrees 11 5 Full width at half maximum 3 (@1 ma) nm 16 Forward voltage
More informationWhite Paper: Modifying Laser Beams No Way Around It, So Here s How
White Paper: Modifying Laser Beams No Way Around It, So Here s How By John McCauley, Product Specialist, Ophir Photonics There are many applications for lasers in the world today with even more on the
More informationORION ORION LASER POWER METER USER MANUAL. OPHIR OPTRONICS
ORION ORION LASER POWER METER USER MANUAL OPHIR OPTRONICS www.ophiropt.com/photonics Table of Contents Chapter 1 Introduction: How to Use This Manual... 2 Chapter 2 Quick Reference... 3 2.1 Getting Started...3
More informationCoherent Laser Measurement and Control Beam Diagnostics
Coherent Laser Measurement and Control M 2 Propagation Analyzer Measurement and display of CW laser divergence, M 2 (or k) and astigmatism sizes 0.2 mm to 25 mm Wavelengths from 220 nm to 15 µm Determination
More informationMeasuring the Output Performance of UV LEDs
Measuring the Output Performance of UV LEDs Paul Mills May 2012 UV LED Measurement: We have the answers, but what are the questions? MEASURING LocaCon, THE OUTPUT On The PERFORMANCE Free OF UV LEDS Home
More informationContent of this Catalog. General information about the sglux TOCONs. Selection guide p. 2. Product details of all TOCONs p. 5. Useful accessories p.
TOCONS Content of this General information about the sglux TOCONs p. Selection guide p. 2 Product details of all TOCONs p. 5 Useful accessories p. 9 List of publications p. 0 General information about
More informationOmniCure Setting the Standard for Precision Assembly UV Bonding
OmniCure Setting the Standard for Precision Assembly UV Bonding Power Precision Control Repeatability The Preferred Choice of Precision Manufacturers Manufacturers in advanced technology sectors around
More informationThe ASTRI SST-2M Illuminator
CTA Calibration Meeting Universidade de São Paulo Instituto de Astronomia, Geofisica e Ciencias Atmosferica The ASTRI SST-2M Illuminator A. Segreto, G. La Rosa INAF Palermo for the ASTRI Collaboration
More informationBiological impact of optical radiation from curing lights
Biological impact of optical radiation from curing lights Ellen Bruzell Nordic Institute of Dental Materials Symposium on Light Sources in Dentistry Halifax - May 28-30 - 2014 Optical sources in dentistry
More informationUV-Index Photodiodes Data Sheets
UV-Index Photodiodes Data Sheets For UV-Index measurement according ot CIE087, 3 % error only = most precise currently available detector, cosine corrected, different packagings, sorted by detector areas.
More informationFirst and second order systems. Part 1: First order systems: RC low pass filter and Thermopile. Goals: Department of Physics
slide 1 Part 1: First order systems: RC low pass filter and Thermopile Goals: Understand the behavior and how to characterize first order measurement systems Learn how to operate: function generator, oscilloscope,
More informationBroadbandradiometer specbos 1211
Broadbandradiometer specbos 1211 specbos 1211 is a broadband and fast spectroradiometer which can be used in laboratory as well as production environment to measure the following quantities: Luminance,
More informationRF and Microwave Power Standards: Extending beyond 110 GHz
RF and Microwave Power Standards: Extending beyond 110 GHz John Howes National Physical Laboratory April 2008 We now wish to extend above 110 GHz Why now? Previous indecisions about transmission lines,
More informationSINGLE-MODE LASER DIODES. Chip on Submount, QA-Mount. Laser Diodes
Laser QA 112/17 / V01 / IF / sheaumann/diodes/sm/qa_sm Chip on Submount, QA-Mount SINGLE-MODE LASER DIODES Laser DESCRIPTION High brightness, high quality, and high reliability are the foundation of our
More informationPhoto-Documentation of Ultraviolet Radiation Induced Visible Fluorescence on Daguerreotypes
Photo-Documentation of Ultraviolet Radiation Induced Visible Fluorescence on Daguerreotypes Jiuan Jiuan Chen Paul Messier LLC Conservation of Photographs And Works on Paper What will be covered 1. A brief
More informationModern Physics Laboratory MP4 Photoelectric Effect
Purpose MP4 Photoelectric Effect In this experiment, you will investigate the photoelectric effect and determine Planck s constant and the work function. Equipment and components Photoelectric Effect Apparatus
More informationPyranometers SP- 100 Series SP -200 Series
Pyranometers SP- 100 Series SP -200 Series www.sensovant.com Telf.: 968 162 005 Next generation sensor head design Self -cleaning dome -shaped head Excellent cosine response Potted solid to withstand extreme
More informationConsiderations When Transitioning from Lamp-based to LED-based Radiant Flux Sources
1-858-279-8034 www.gamma-sci.com 9925 Carroll Canyon Rd San Diego, CA 92131 Considerations When Transitioning from Lamp-based to LED-based Radiant Flux Sources Introduction Lamp-based radiant flux sources
More informationBTS2048-UV. Product tags: UV, Spectral Data, LED Binning, Industrial Applications, LED. https://www.gigahertz-optik.de/en-us/product/bts2048-uv
BTS2048-UV https://www.gigahertz-optik.de/en-us/product/bts2048-uv Product tags: UV, Spectral Data, LED Binning, Industrial Applications, LED Gigahertz-Optik GmbH 1/8 Description UV CCD spectroradiometer
More informationNew applications are transforming the UV-LED market, and Nikkiso Deep UV-LED devices are applicable to many important applications including:
LED Ultraviolet Light Emitting Diodes (UV-LED) Nikkiso s advantaged UV-LED products all with high performance and reliability at an affordable cost. Along with our sglux UV sensors and probes, Boston Electronics
More informationLaser Diode. Photonic Network By Dr. M H Zaidi
Laser Diode Light emitters are a key element in any fiber optic system. This component converts the electrical signal into a corresponding light signal that can be injected into the fiber. The light emitter
More informationSOLARONIX. Solixon A-1525-V
SOLARONIX Solixon A-1525-V Based on Solaronix' exclusive light engine, our solar simulation equipment delivers a perfect and continuous artificial sunlight 24/7, allowing for accurate stability and performance
More informationSolar Cell Parameters and Equivalent Circuit
9 Solar Cell Parameters and Equivalent Circuit 9.1 External solar cell parameters The main parameters that are used to characterise the performance of solar cells are the peak power P max, the short-circuit
More informationREPORT OF CALIBRATION of One Standard of Spectral Irradiance ( nm)
Newport Corp Stratford, CT 6/6/08 REPORT OF CALIBRATION of One Standard of Spectral Irradiance (250-2400 nm) Oriel Part# 63358 Lamp Serial Number: 7~1803 1. Material One 45 watt, quartz halogen, tungsten
More informationOmnicure S1500 UV Spot Curing System. 122, Chemin de la Cavée Orgeval Tèl :
UV Spot Curing System The OmniCure S1500 delivers power, control and reliability in an extremely cost-effective, affordable system. Powerful 200 Watt Intelli-Lamp with a guaranteed lamp life of 2000 hours
More informationLP PYRA 06. REV Jan. 2007
REV. 1.0 10 Jan. 2007 LP PYRA 06 Our instruments' quality level is the results of the product continuous development. This can bring about differences between the information written in this manual and
More informationLP UVA Introduction. 2 Working Principle. TEL r.a. FAX
CENTRO DI TARATURA SIT N 124 TEL. +39.049.8977150 r.a. FAX +39.049.635596 LP UVA 02 1 Introduction The LP UVA 02 radiometer measures the global irradiance in the UVA spectral region on a plane surface
More information[MILLIMETERS] INCHES DIMENSIONS ARE IN:
Features: Wide acceptance angle, 00 Fast response time Linear response vs Irradiance Plastic leadless chip carrier (PLCC-) Low Capacitance Top Sensing Area Tape and reel packaging Moisture Sensitivity
More informationThe Study on the Method of Eliminating Errors of PSD
Sensors & Transducers 2013 by IFSA http://www.sensorsportal.com The Study on the Method of Eliminating Errors of PSD Changjun ZHOU, * Wei WANG, Hongxiao CHAO, Lina HONG, Xin CAO, Pengfei ZHANG, Lingyue
More informationDETECTORS Important characteristics: 1) Wavelength response 2) Quantum response how light is detected 3) Sensitivity 4) Frequency of response
DETECTORS Important characteristics: 1) Wavelength response 2) Quantum response how light is detected 3) Sensitivity 4) Frequency of response (response time) 5) Stability 6) Cost 7) convenience Photoelectric
More informationPHYS General Physics II Lab Diffraction Grating
1 PHYS 1040 - General Physics II Lab Diffraction Grating In this lab you will perform an experiment to understand the interference of light waves when they pass through a diffraction grating and to determine
More informationPower Sensors Introduction
Introduction Introduction and Selection Charts & Coherent uses three primary coatings to capture the incident radiation on our thermal sensors. The specifications for each sensor list which coating is
More informationBLACKBODY RADIATION PHYSICS 359E
BLACKBODY RADIATION PHYSICS 359E INTRODUCTION In this laboratory, you will make measurements intended to illustrate the Stefan-Boltzmann Law for the total radiated power per unit area I tot (in W m 2 )
More informationLecture 5: Introduction to Lasers
Lecture 5: Introduction to Lasers http://en.wikipedia.org/wiki/laser History of the Laser v Invented in 1958 by Charles Townes (Nobel prize in Physics 1964) and Arthur Schawlow of Bell Laboratories v Was
More informationFiber Coupled Semiconductor Laser
Fiber Coupled Semiconductor Laser Features Plug & Play ESD Protection Power Adjustable LD Current Full Protection LD Temperature Stabilized Compact Size Applications Bio Technology Semiconductor Medical
More informationCU-LASP Test Facilities! and Instrument Calibration Capabilities"
CU-LASP Test Facilities! and Instrument Calibration Capabilities" Ginger Drake Calibration Group Manager 303-492-5899 Ginger.Drake@lasp.colorado.edu Thermal Vacuum Test Facilities" 2 Multiple Optical Beam
More informationAmbient Light Sensors General Application Note
Ambient Light Sensors General Application Note Abstract This application note introduces ambient light sensing on a general level. The different types of ambient light sensors are described and related
More informationSpectroscopy in the UV and Visible: Instrumentation. Spectroscopy in the UV and Visible: Instrumentation
Spectroscopy in the UV and Visible: Instrumentation Typical UV-VIS instrument 1 Source - Disperser Sample (Blank) Detector Readout Monitor the relative response of the sample signal to the blank Transmittance
More informationBlueWave MX-150 LED Spot-Curing System High-Intensity Curing System with the Flexibility of Multiple Systems
BLUEWAVE MX-150 PRODUCT BULLETIN BlueWave MX-150 LED Spot-Curing System High-Intensity Curing System with the Flexibility of Multiple Systems The BlueWave MX-150 curing system provides manufacturers with
More information