Demonstration of a dual-band IR imaging spectrometer

Brian P. Beecken; Paul D. LeVan; Benjamin D. Todt

doi:10.1117/12.740310

13 September 2007 Demonstration of a dual-band IR imaging spectrometer

Brian P. Beecken, Paul D. LeVan, Benjamin D. Todt

Proceedings Volume 6660, Infrared Systems and Photoelectronic Technology II; 666004 (2007) https://doi.org/10.1117/12.740310
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

A prototype of a compact, low mass, multispectral imaging spectrometer suitable for space-based applications has been built utilizing a dual-band infrared focal plane array. The spectrometer design uses a grating blaze chosen to be efficient at both 3.75-6.05 and 7.5-12.1 μm. The spectrometer had previously been spectrally calibrated with flooded blackbody illumination and the mercury cadmium telluride focal plane array was found to have cutoff wavelengths near 5.2 and 10.5 μm. The spectrometer was tested in the MWIR band by imaging a blackbody at a distance of 100 m. Spectral images of the Sun were obtained in both MWIR and LWIR, allowing comparison of the solar diameter at various IR wavelengths with tabulated visual widths. The performance of the spectrometer is characterized at a deeper level as a result of these observations.

Citation Download Citation

Brian P. Beecken, Paul D. LeVan, and Benjamin D. Todt "Demonstration of a dual-band IR imaging spectrometer", Proc. SPIE 6660, Infrared Systems and Photoelectronic Technology II, 666004 (13 September 2007); https://doi.org/10.1117/12.740310

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