Abstract

High-sensitivity mercury-cadmium-teluride (MCT) detectors have generally been used in low-light experiments and where quantitation was not essential. These restrictions were commonly believed to be associated with the nonlinear response of the detectors due to intrinsic limitations of the detection process. Recent preamplifier and bias circuit designs have made significant gains in reducing and, in the case of the broadband MCTs, virtually eliminating the nonlinear character of these detectors in typical FT-IR applications. This improvement in performance in achieved through a change in detector biasing from constant current to constant voltage.

Electronic influences on an infrared detector signal: nonlinearity and amplification

Kim Rahmelow
Appl. Opt. 36(10) 2123-2132 (1997)

Practical example of the correction of Fourier-transform spectra for detector nonlinearity

M. C. Abrams, G. C. Toon, and R. A. Schindler
Appl. Opt. 33(27) 6307-6314 (1994)

Correction of detector nonlinearity in Fourier transform spectroscopy with a low-temperature blackbody

Lars Fiedler, Stuart Newman, and Stephan Bakan
Appl. Opt. 44(25) 5332-5340 (2005)

Accurate infrared transmittance measurements on optical filters using an FT-IR spectrometer

David A. C. Compton, John Drab, and Howard S. Barr
Appl. Opt. 29(19) 2908-2912 (1990)

Detector nonlinearity correction scheme for the LPMA balloonborne Fourier transform spectrometer

Pascal Jeseck, Claude Camy-Peyret, Sébastien Payan, and Toufic Hawat
Appl. Opt. 37(27) 6544-6549 (1998)