U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

A Superconductor-Insulator-Normal Metal Bolometer with Microwave Readout Suitable for Large-Format Arrays

Published

Author(s)

Konrad W. Lehnert, A. M. Clark, William Duncan, Kent D. Irwin, Nathan A. Tomlin, Joel N. Ullom

Abstract

We demonstrate hight bandwidth and low noise readout of a superconductor-insulator-normal metal-insulator superconductor hot electron bolometer element. We achieve a noise equivalent temperature of better than 0.6 muK/Hz1/2 and corresponding electrical noise equivalent power of 7 x 10u -17 W/Hz 1/2 for a normal metal volume of 4.5 mu mu3 at an operating temperature of 270 mK. Using a pulsed bias technique we measure a thermal tiem constant of 1.2 mu s at 270mK. The microwave readout method we employ is compatible with large format arrays of 103-10ud pixels required for future far-infrared space based observations.
Citation
Applied Physics Letters
Volume
86
Pub Type
Journals

Keywords

bolometer, hot electron superconducting tunnel, junction

Citation

Lehnert, K. , Clark, A. , Duncan, W. , Irwin, K. , Tomlin, N. and Ullom, J. (2005), A Superconductor-Insulator-Normal Metal Bolometer with Microwave Readout Suitable for Large-Format Arrays, Applied Physics Letters (Accessed April 24, 2024)

Created January 1, 2005, Updated February 17, 2017