Short-wave infrared radiometers design and characterizations

George P. Eppeldauer; Howard W. Yoon

doi:10.1117/12.720548

14 May 2007 Short-wave infrared radiometers design and characterizations

Proceedings Volume 6542, Infrared Technology and Applications XXXIII; 65420O (2007) https://doi.org/10.1117/12.720548
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

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*.

Citation Download Citation

George P. Eppeldauer and Howard W. Yoon "Short-wave infrared radiometers design and characterizations", Proc. SPIE 6542, Infrared Technology and Applications XXXIII, 65420O (14 May 2007); https://doi.org/10.1117/12.720548

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