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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 1 — Jan. 1, 1999
  • pp: 18–28

Ultraviolet radiometry with synchrotron radiation and cryogenic radiometry

Ping-Shine Shaw, Keith R. Lykke, Rajeev Gupta, Thomas R. O’Brian, Uwe Arp, Hunter H. White, Thomas B. Lucatorto, Joseph L. Dehmer, and Albert C. Parr  »View Author Affiliations


Applied Optics, Vol. 38, Issue 1, pp. 18-28 (1999)
http://dx.doi.org/10.1364/AO.38.000018


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Abstract

The combination of a cryogenic radiometer and synchrotron radiation enables detector scale realization in spectral regions that are otherwise difficult to access. Cryogenic radiometry is the most accurate primary detector-based standard available to date, and synchrotron radiation gives a unique broadband and continuous spectrum that extends from x ray to far IR. We describe a new cryogenic radiometer-based UV radiometry facility at the Synchrotron Ultraviolet Radiation Facility II at the National Institute of Standards and Technology. The facility is designed to perform a variety of detector and optical materials characterizations. The facility combines a high-throughput, normal incidence monochromator with an absolute cryogenic radiometer optimized for UV measurements to provide absolute radiometric measurements in the spectral range from 125 nm to approximately 320 nm. We discuss results on photodetector characterizations, including absolute spectroradiometric calibration, spatial responsivity mapping, spectroreflectance, and internal quantum efficiency. In addition, such characterizations are used to study UV radiation damage in photodetectors that can shed light on the mechanism of the damage process. Examples are also given for UV optical materials characterization.

© 1999 Optical Society of America

OCIS Codes
(040.7190) Detectors : Ultraviolet
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5630) Instrumentation, measurement, and metrology : Radiometry

History
Original Manuscript: May 27, 1998
Revised Manuscript: September 8, 1998
Published: January 1, 1999

Citation
Ping-Shine Shaw, Keith R. Lykke, Rajeev Gupta, Thomas R. O’Brian, Uwe Arp, Hunter H. White, Thomas B. Lucatorto, Joseph L. Dehmer, and Albert C. Parr, "Ultraviolet radiometry with synchrotron radiation and cryogenic radiometry," Appl. Opt. 38, 18-28 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-1-18

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