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Low noise thermistor read out for wideband room temperature infrared detectors

Published

Author(s)

Ivan Ryger, Michelle S. Stephens, John H. Lehman, Matthew T. Spidell, Malcolm G. White, Nathan A. Tomlin, Dave Harber, Peter Lobotka

Abstract

An absolute electrical substitution radiometer is a way to ensure highly accurate and stable measurement of optical power in a wide range of optical wavelengths. Its sensitivity is mainly determined by the temperature stability of the equithermal bath and the electrical noise of the temperature readout. In this article we investigate the noise background of different preamplifiers in combination with different types of temperature sensors. The 1/f noise of temperature sensors and Johnson thermal noise of preamplifiers were chosen as a figure of merit. The results from our measurements are discussed.
Conference Dates
September 25-30, 2016
Conference Location
Coppenhagen
Conference Title
41st International Conference on Infrared, Millimeter and Terahertz Waves, 41st International
Conference on Infrared, Millimeter and Terahertz Waves,
Coppenhagen, Denmark, 09/25/2016 to 09/30/2016

Keywords

Wheatstone Bridge, Preamplifier, JFET, Bipolar transistor, 1/f noise

Citation

Ryger, I. , Stephens, M. , Lehman, J. , Spidell, M. , White, M. , Tomlin, N. , Harber, D. and Lobotka, P. (2016), Low noise thermistor read out for wideband room temperature infrared detectors, 41st International Conference on Infrared, Millimeter and Terahertz Waves, 41st International Conference on Infrared, Millimeter and Terahertz Waves, Coppenhagen, Denmark, 09/25/2016 to 09/30/2016, Coppenhagen, -1, [online], https://doi.org/10.1109/IRMMW-THz.2016.7758947 (Accessed April 21, 2024)
Created September 25, 2016, Updated November 10, 2018