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Proceedings Paper

Short-wave infrared radiometers design and characterizations
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Paper Abstract

Short-wave infrared (SW-IR) radiometers have been developed to extend the NIST reference responsivity scales from the silicon wavelength range to 2500 nm. In addition to spectral power responsivity measurements, where 5 mm diameter extended-InGaAs (EIGA) detectors are underfilled by the incident radiation, irradiance responsivity calibrations are needed. Irradiance measuring radiometers are used as reference detectors to calibrate field radiometers in both irradiance and radiance measurement modes. In irradiance mode, smaller detectors with high shunt resistance, such as 1 mm diameter short-wave HgCdTe and EIGA detectors are used. Mechanical, optical, thermal, and electronic design considerations of SW-IR radiometers are discussed. Noise equivalent currents (NEC) were measured to evaluate noise equivalent power (NEP) and D*.

Paper Details

Date Published: 14 May 2007
PDF: 10 pages
Proc. SPIE 6542, Infrared Technology and Applications XXXIII, 65420O (14 May 2007); doi: 10.1117/12.720548
Show Author Affiliations
George P. Eppeldauer, National Institute of Standards and Technology (United States)
Howard W. Yoon, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 6542:
Infrared Technology and Applications XXXIII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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