Evaluation of optical radiation detectors in the range from 0.8 μm to 20 μm at the NIST infrared spectral calibration facility

Vyacheslav B. Podobedov; George P. Eppeldauer; Thomas C. Larason

doi:10.1117/12.980937

18 December 2012 Evaluation of optical radiation detectors in the range from 0.8 μm to 20 μm at the NIST infrared spectral calibration facility

Vyacheslav B. Podobedov, George P. Eppeldauer, Thomas C. Larason

Author Affiliations +

Proceedings Volume 8550, Optical Systems Design 2012; 855029 (2012) https://doi.org/10.1117/12.980937
Event: SPIE Optical Systems Design, 2012, Barcelona, Spain

Abstract

Analysis of multiple factors affecting the uncertainty of the absolute spectral responsivity of optical radiation detectors is presented. This includes both the validation of the radiometric scale of the infrared reference detectors and the scale transfer process to the unit under test. Reference detectors include a low NEP pyroelectric detector, an InSb detector, and a sphere-input extended InGaAs detector. While all three types of reference detectors were calibrated independently, less than 0.5 % mismatch of spectral responsivities was observed in the spectrally overlapping regions. We provide a performance evaluation of the NIST IR Detector Calibration Facility, which was designed for testing optical radiation detectors in both radiant power and irradiance measurement modes. This facility utilizes a high throughput monochromator with interchangeable diffraction gratings. Depending on the spectral range, a blackbody at 1100°C, or a quartz halogen lamp with about a 10^-4 long-term relative output variation was used as a radiation source. In order to minimize the uncertainty budget for calibration data, specific attention was given to the profile of the incident beam, the precise positioning of detectors, and the influence of atmospheric absorption. In addition to the spectral responsivity calibration of detectors, the facility allows precise mapping of detector active area for spatial non-uniformity of response. Typical calibration uncertainties that can be achieved are about 1 % and 2.5 % (k=2) in the radiant power and irradiance modes, respectively. Examples for responsivity calibrations of different detectors are presented.

Citation Download Citation

Vyacheslav B. Podobedov, George P. Eppeldauer, and Thomas C. Larason "Evaluation of optical radiation detectors in the range from 0.8 μm to 20 μm at the NIST infrared spectral calibration facility", Proc. SPIE 8550, Optical Systems Design 2012, 855029 (18 December 2012); https://doi.org/10.1117/12.980937

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available