23 October 1997 HgCdTe photodiodes with cutoff wavelengths of 17 um at 70 K for use in high-resolution interferometers for remote sensing
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Abstract
Traditionally, photoconductive (PC) HgCdTe detectors have been used in interferometers for detection in the 14-15 .tm range. In this paper we present recent quantum efficiency and junction impedance data which demonstrate that P-on-n HgCdTe photovoltaic (PV) detectors with 16-17 m cutoff wavelengths at 70 K are suitable for use in spaceborne remote sensing interferometrjc instruments such as IMG-2, ATRAS, TES and CCOSM. Theperformance of these large-area detectors is of particular importance for interferometers because they have higher linearity at higher fluxes than PCHgCdTe arrays. The linearity requirement of 1% for the IMG-2 instrument, with background fluxes in excess of 1016 ph/cm2-s, is only marginally met by PC HgCdTe detectors. We present, for the first time, data showing better than 1% linearity at fluxes of l.3x10'7phlcm2-s for PV HgCdTe detectors with 60 K cutoff wavelengths of 15.5 pm. Keywords: HgCdTe, infrared detectors, photovoltaic detectors, linearity, interferometers,mercury cadmium telluride, IMG-2
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Eric E. Krueger, Eric E. Krueger, D. Lee, D. Lee, Christopher R. Miller, Christopher R. Miller, C. Lynne Terzis, C. Lynne Terzis, P. O'Dette, P. O'Dette, Brian Denley, Brian Denley, James H. Rutter, James H. Rutter, Janis L. Williams, Janis L. Williams, Marion B. Reine, Marion B. Reine, } "HgCdTe photodiodes with cutoff wavelengths of 17 um at 70 K for use in high-resolution interferometers for remote sensing", Proc. SPIE 3122, Infrared Spaceborne Remote Sensing V, (23 October 1997); doi: 10.1117/12.292700; https://doi.org/10.1117/12.292700
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