Design of the stressed Ge:Ga far-infrared array for SIRTF

Richard Schnurr; Craig L. Thompson; James T. Davis; Jeffrey W. Beeman; James Cadien; Erick T. Young; Eugene E. Haller; George H. Rieke

doi:10.1117/12.317318

21 August 1998 Design of the stressed Ge:Ga far-infrared array for SIRTF

Richard Schnurr, Craig L. Thompson, James T. Davis, Jeffrey W. Beeman, James Cadien, Erick T. Young, Eugene E. Haller, George H. Rieke

Author Affiliations +

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317318
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

Stressed Ge:Ga is currently the most suitable detector type for very low background operation in the 115 to 200 micrometers range. Nonetheless, substantial advances have been required to develop stressed Ge:Ga detectors that work at the background limit in SIRTF. Both dark current and read noise have been improved significantly for the SIRTF devices. The design also takes account of space flight requirements such as the necessity to anneal the focal plane thermally using a minimum of cryogenic power dissipation, and the desire that any failures not propagate through an entire focal plane. The SIRTF 2 X 20 pixel focal plane will have dark current of about 200 e/s, read noise of 100 e rms, and responsivity > 7 A/W. As a result, even in the darkest parts of the sky, it will reach the background limit in less than 4 seconds of integration.

Citation Download Citation

Richard Schnurr, Craig L. Thompson, James T. Davis, Jeffrey W. Beeman, James Cadien, Erick T. Young, Eugene E. Haller, and George H. Rieke "Design of the stressed Ge:Ga far-infrared array for SIRTF", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317318

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available