Infrared detector spectral responsivity calibration facility at the National Institute of Standards and Technology (NIST)

Alan L. Migdall; George P. Eppeldauer; Christopher L. Cromer

doi:10.1117/12.178614

23 June 1994 Infrared detector spectral responsivity calibration facility at the National Institute of Standards and Technology (NIST)

Alan L. Migdall, George P. Eppeldauer, Christopher L. Cromer

Author Affiliations +

Proceedings Volume 2227, Cryogenic Optical Systems and Instruments VI; (1994) https://doi.org/10.1117/12.178614
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The National Institute of Standards and Technology (NIST) is developing a facility to provide absolute responsivity calibrations of detectors in the 2 to 20 micrometers spectral region. The goal is to tie the measurements of NIST's primary radiometric scale with a 1 (sigma) uncertainty of approximately 5%. The system uses chopped thermal IR sources, a room temperature prism/grating spectrometer for spectral selectivity with 1 - 2% spectral resolution and a cryogenic bolometer as a transfer standard detector. The composite design bolometer has an absorbing surface 5 mm in diameter, a nonlinearity < 1% over 5 decades and a responsivity of approximately 1 X 10⁴ V/W without amplification. This bolometer is being calibrated against the High Accuracy Cryogenic Radiometer, the nation's primary standard for optical radiometric measurements. The bolometer's spectral response will also be measured using the Low Background Infrared facility at NIST, the nation's primary blackbody calibration facility.

Citation Download Citation

Alan L. Migdall, George P. Eppeldauer, and Christopher L. Cromer "Infrared detector spectral responsivity calibration facility at the National Institute of Standards and Technology (NIST)", Proc. SPIE 2227, Cryogenic Optical Systems and Instruments VI, (23 June 1994); https://doi.org/10.1117/12.178614

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