A Compact Prism Spectrograph Suitable For Broadband Infrared Spectral Surveys With Array Detectors

David W. Warren; John A. Hackwell

doi:10.1117/12.951603

5 July 1989 A Compact Prism Spectrograph Suitable For Broadband Infrared Spectral Surveys With Array Detectors

David W. Warren, John A. Hackwell

Proceedings Volume 1055, Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology; (1989) https://doi.org/10.1117/12.951603
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

We describe a novel design for a low-resolution spectrograph that is capable of covering the entire 2.9-13.5 μm region, without scanning, at a resolving power of 20-100. The spectrograph uses two unique curved prisms to disperse radiation onto two 58-element arrays of infrared detectors. It has no moving parts. This spectrograph is an effective replacement for scanning circular variable filter (CVF) spectrometers or for Michelson Interferometers working at low resolution. Because all of the detectors in the spectrograph view an object through the same aperture, time-varying sources introduce no ambiguities into the spectra. The use of BIB detector arrays gives the instrument high sensitivity. We describe a ground-based version of the spectrograph that is currently under construction.

Citation Download Citation

David W. Warren and John A. Hackwell "A Compact Prism Spectrograph Suitable For Broadband Infrared Spectral Surveys With Array Detectors", Proc. SPIE 1055, Raman Scattering, Luminescence and Spectroscopic Instrumentation in Technology, (5 July 1989); https://doi.org/10.1117/12.951603

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