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Proceedings Paper

Comparison Between A Side-Viewing Cryogenic Radiometer And Self-Calibrated Silicon Photodiodes
Author(s): C. C. Hoyt; P. J. Miller; P. V. Foukal; E. F. Zalewski
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Paper Abstract

A convenient cryogenic electrical substitution radiometer has been developed for laser radiometry. The radiometer system consists of a side-viewing active cavity receiver of 10 second time constant, a table-top liquid helium cryostat with a Brewster-angle window port, and two digital temperature controllers interfaced with an AT-class microcomputer. Radiometer measurements of an intensity-stabilized laser beam have been compared to measurements taken with silicon photodiodes self-calibrated using a new, non-destructive technique. Agreement between these two techniques of light measurement is obtained at the 0.05% level. The disagreement at the 0.05% level may be significant, and we put forward several possible explanations for future investigation.

Paper Details

Date Published: 26 September 1989
PDF: 10 pages
Proc. SPIE 1109, Optical Radiation Measurements II, (26 September 1989); doi: 10.1117/12.960726
Show Author Affiliations
C. C. Hoyt, Cambridge Research and Instrumentation, Inc. (United States)
P. J. Miller, Cambridge Research and Instrumentation, Inc. (United States)
P. V. Foukal, Cambridge Research and Instrumentation, Inc. (United States)
E. F. Zalewski, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 1109:
Optical Radiation Measurements II
James M. Palmer, Editor(s)

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