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You searched on: Author: keith lykke

Displaying records 31 to 40 of 120 records.
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31. Characterization and Correction of Stray Light in Optical Instruments
Published: 11/1/2007
Authors: Yuqin Zong, Steven W Brown, G Meister, R Barnes, Keith R. Lykke
Abstract: Improperly imaged, or scattered, optical radiation within an instrument is difficult to properly characterize and is often the dominant residual source of measurement error. Scattered light can originate from the spectral components of a point sour ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841127

32. Ultraviolet Characterization of Integrating Spheres
Published: 7/9/2007
Authors: Ping-Shine Shaw, Zhigang Li, Uwe Arp, Keith R. Lykke
Abstract: We have studied the performance of integrating spheres in the ultraviolet (UV) with wavelengths as short as 200 nm. Two techniques were used for this study; first, the spectral throughput of an integrating sphere irradiated by a deuterium lamp was an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841052

33. Correction of Stray Light In Spectroradiometers and Imaging Instruments
Published: 7/4/2007
Authors: Yuqin Zong, Steven W Brown, Keith R. Lykke, Yoshihiro Ohno
Abstract: Measurement errors from stray light, spectral or spatial, are inevitable and are often the dominant source of error in spectroradiometers and imaging radiometers/photometers. We have developed a simple matrix method for correcting spatial stray light ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841072

34. Comparison of absolute spectral irradiance responsivity measurement techniques using wavelength-tunable lasers
Published: 6/20/2007
Authors: V Ahtee, Steven W Brown, Thomas C Larason, Keith R. Lykke, E and Noorma Ikonen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101543

35. Thermodynamic-Temperature Determinations of the Ag and Au Freezing Temperatures Using a Detector-Based Radiation Thermometer
Published: 5/20/2007
Authors: Howard W Yoon, David W Allen, Charles E Gibson, Maritoni Abatayo Litorja, Robert D. Saunders, Steven W Brown, George P Eppeldauer, Keith R. Lykke
Abstract: We describe the development of a radiation thermometer calibrated for spectral radiance responsivity using cryogenic, electrical-substitution radiometry to determine the thermodynamic temperatures of the Ag- and Au-freezing temperatures. The absolut ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840978

36. Synchrotron Radiation Based Irradiance Calibration From 200 nm to 400 nm at SURF III
Published: 1/1/2007
Authors: Uwe Arp, Charles E Gibson, Keith R. Lykke, Albert C Parr, Robert D. Saunders, D J Shin, Ping-Shine Shaw, Zhigang Li, Howard W Yoon
Abstract: A new facility for measuring source irradiance was commissioned recently at the National Institute of Standards and Technology (NIST). The facility uses the calculable radiation from the Synchrotron Ultraviolet Radiation Facility (SURF III) as the pr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841022

37. Absolute Radiant Flux Measurement of the Angular Distribution of Synchrotron Radiation
Published: 7/11/2006
Authors: Ping-Shine Shaw, Uwe Arp, Keith R. Lykke
Abstract: We have measured the absolute radiant flux of synchrotron radiation as a function of the angle above and below the orbital plane with high accuracy at the Synchrotron Ultraviolet Radiation Facility (SURF III) and the results were compared with theore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840997

38. Facility for Spectral Irradiance and Radiance Responsivity Calibrations Using Uniform Sources (SIRCUS)
Published: 7/7/2006
Authors: Steven W Brown, George P Eppeldauer, Keith R. Lykke
Abstract: Detectors have historically been calibrated for spectral power responsivity at the National Institute of Standards and Technology (NIST) using a lamp-monochromator system to tune the wavelength of the excitation source. Silicon detectors can be cali ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841000

39. Simple Spectral Stray Light Correction Method for Array Spectroradiometers
Published: 2/20/2006
Authors: Yuqin Zong, Steven W Brown, Bettye C Johnson, Keith R. Lykke, Yoshihiro Ohno
Abstract: In many applications, the measurement accuracy of spectroradiometers, particularly instruments with a single dispersive element, is limited by the presence of stray radiation within the instrument. A simple, practical method has been developed to co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=840968

40. Absolute radiant flux measurement for the angular distribution of synchrotron radiation
Published: 1/1/2006
Authors: Ping-Shine Shaw, Uwe Arp, Keith R. Lykke
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104163



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