Abstract

A stressed Ge:Ga photoconductor array with three elements applied to the Infrared Telescope in Space satellite was fabricated and tested in experiments at 2.0 K in very low-photon-influx conditions (~105 photons/s). Stress was applied to three Ge:Ga detectors in a series by a stable and compact stressing apparatus by using cone-disk springs. The cutoff wavelength was ~180 μm. Responsivity was ~100 A/W, and the product of quantum efficiency and photoconductive gain, ηG, was ~1 with a chopping frequency of 2 Hz. The noise equivalent power was <5 × 10−18 W/Hz1/2 when low-noise transimpedance amplifiers were used. A slow transient response and a nonlinear response that was dependent on the background photon influx were observed in the experiments. The latter showed that the ηG had a time constant τc that was proportional to Nph−1/2.

© 1992 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Stressed photoconductive detector for far-infrared space applications

J.-Q. Wang, P. L. Richards, J. W. Beeman, and E. E. Häller
Appl. Opt. 26(22) 4767-4771 (1987)

Stressed Ge:Ga infrared detectors: performance and operational parameters

D. Lutz, D. Lemke, and J. Wolf
Appl. Opt. 25(10) 1698-1700 (1986)

Development of a gallium-doped germanium far-infrared photoconductor direct hybrid two-dimensional array

Mikio Fujiwara, Takanori Hirao, Mitsunobu Kawada, Hiroshi Shibai, Shuji Matsuura, Hidehiro Kaneda, Mikhail Patrashin, and Takao Nakagawa
Appl. Opt. 42(12) 2166-2173 (2003)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription