Compact snapshot birefringent imaging Fourier transform spectrometer

Michael W. Kudenov; Eustace L. Dereniak

doi:10.1117/12.864703

13 August 2010 Compact snapshot birefringent imaging Fourier transform spectrometer

Proceedings Volume 7812, Imaging Spectrometry XV; 781206 (2010) https://doi.org/10.1117/12.864703
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

The design and implementation of a compact multiple-image Fourier transform spectrometer (FTS) is presented. Based on the multiple-image FTS originally developed by A. Hirai, the presented device offers significant advantages over his original implementation. Namely, its birefringent nature results in a common-path interferometer which makes the spectrometer insensitive to vibration. Furthermore, it enables the potential of making the instrument ultra-compact, thereby improving the portability of the sensor. The theory of the birefringent FTS is provided, followed by details of its specific embodiment. A laboratory proof of concept of the sensor, designed and developed at the Optical Detection Lab, is also presented. Spectral measurements of laboratory sources are provided, including measurements of light-emitting diodes and gas-discharge lamps. These spectra are verified against a calibrated Ocean Optics USB2000 spectrometer. Other data were collected outdoors, demonstrating the sensor's ability to resolve spectral signatures in standard outdoor lighting and environmental conditions.

Citation Download Citation

Michael W. Kudenov and Eustace L. Dereniak "Compact snapshot birefringent imaging Fourier transform spectrometer", Proc. SPIE 7812, Imaging Spectrometry XV, 781206 (13 August 2010); https://doi.org/10.1117/12.864703

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