Four-band infrared detector for FY-2C application

Details Four-band infrared detector for FY-2C application Four-band infrared detector for FY-2C application

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5964...87g&link_type=abstract

Advances in Optical Thin Films II. Edited by Amra, Claude; Kaiser, Norbert; Macleod, H. Angus. Proceedings of the SPIE, Volume

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Four-band HgCdTe infrared (IR) detector is developed for the first operational Chinese geostationary meteorological satellite FY-2C launched on October 19, 2004. As the Visible Infrared Spin-Scan Radiometer (VISSR) is the primary payload on FY-2C, the IR detector is one of the most important modules for such an imaging instrument. Compared with its predecessors FY-2A and FY-2B (experimental models, launched in June 1997 and June 2000 respectively), the detector used in FY-2C is quite different in band selection and detector package. The four band IR detector for FY-2C application consists of four photoconductive (PC) detector chips made of Hg1-xCdxTe with different compositions x , corresponding to the wavelengths of 3.5 to 4.0μm, 6.3 to 7.6μm, 10.3 to 11.3μm and 11.5 to 12.5μm respectively. Four cooled IR filters are included in one detector package, which enables us to simplify the system without any IR beam splitters and IR filters outside the detector for defining separate bands. The IR detector operates at radiative cooler temperature ranging from 92 to 102K. This paper reviews the design, process and packaging for the four-band IR detector used in FY-2C satellite. The performances and related aspects of this detector are also presented.

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