Monolithic Ge: Ga two-dimensional array detector for FIS instrument on ASTRO-F

Shuji Matsuura; Yosuke Isozaki; Mai Shirahata; Hidehiro Kaneda; Takao Nakagawa; Michael A. Patrashin; Mikio Fujiwara; Takanori Hirao; Mitsunobu Kawada; Hiroshi Shibai; Toyoki Watabe

doi:10.1117/12.461485

5 March 2003 Monolithic Ge:Ga two-dimensional array detector for FIS instrument on ASTRO-F

Shuji Matsuura, Yosuke Isozaki, Mai Shirahata, Hidehiro Kaneda, Takao Nakagawa, Michael A. Patrashin, Mikio Fujiwara, Takanori Hirao, Mitsunobu Kawada, Hiroshi Shibai, Toyoki Watabe

Author Affiliations +

Proceedings Volume 4850, IR Space Telescopes and Instruments; (2003) https://doi.org/10.1117/12.461485
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

ASTRO-F is a Japanese infrared satellite, which is scheduled for launch in early 2004. Far-infrared instrument that will be onboard ASTRO-F, Far-Infrared Surveyor (FIS), will perform the four-color all sky survey in the 50-200 um wavelength range with the diffraction-limited spatial resolution for 67-cm diameter telescope. For short-wave photometric bands of 50-110 um, we have developed a monolithic Ge:Ga two-dimensional array detector with no light cavity. This top-illumination type array design is promising for making future large-format array. The monolithic Ge:Ga is directly attached onto cryogenic readout electronics, capacitive trans-impedance amplifier composed of silicon p-MOSFETs, designed specially for low-temperature use. Results of the detector measurements show that the device works properly and sensitive enough for astronomical applications. Complex behavior of the detector, such as non-linearity of the integration ramp, transient response, non-uniform responsivity in the array, and cross-talk response, which may cause systematic error in the photometry, have been found. But, these effects are ~10% of major part of the signal and correctable with accuracy of a few %.

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Shuji Matsuura, Yosuke Isozaki, Mai Shirahata, Hidehiro Kaneda, Takao Nakagawa, Michael A. Patrashin, Mikio Fujiwara, Takanori Hirao, Mitsunobu Kawada, Hiroshi Shibai, and Toyoki Watabe "Monolithic Ge:Ga two-dimensional array detector for FIS instrument on ASTRO-F", Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); https://doi.org/10.1117/12.461485

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