Development Of JFET Amplified InSb Infrared Detector Array For Use At Liquid Helium Temperature

K. Yamamoto; H. Fujisada; T. Matsumoto; H. Murakami

doi:10.1117/12.978612

8 January 1990 Development Of JFET Amplified InSb Infrared Detector Array For Use At Liquid Helium Temperature

K. Yamamoto, H. Fujisada, T. Matsumoto, H. Murakami

Proceedings Volume 1157, Infrared Technology XV; (1990) https://doi.org/10.1117/12.978612
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

For astronomical observation in space, we have developed a JFET amplified InSb infrared detector array which can be operated at liquid helium temperature. This detector array uses 24- channel InSb photodiodes, 1 mm x 0.5 mm per element, having low junction capacitance for reducing noise. The JFET amplifier circuit is designed as a hybrid IC containing a 24-channel charge integration amplifier (CIA) array. Since the JFET amplifier circuit cannot operate at liquid helium temperature, it is suspended from the frame using aramid wires and warmed up to about 70 K by a built-in heater. We have evaluated this JFET amplified InSb infrared detector array and obtained good results with readout noise of about 100e . It was confirmed that this noise level is low enough for use in astronomical observation in space.

Citation Download Citation

K. Yamamoto, H. Fujisada, T. Matsumoto, and H. Murakami "Development Of JFET Amplified InSb Infrared Detector Array For Use At Liquid Helium Temperature", Proc. SPIE 1157, Infrared Technology XV, (8 January 1990); https://doi.org/10.1117/12.978612

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