Liquid crystal Fourier transform spectrometer

Gary D. Sharp; Ping Wang; Steven A. Serati; Teresa K. Ewing

doi:10.1117/12.317657

31 July 1998 Liquid crystal Fourier transform spectrometer

Gary D. Sharp, Ping Wang, Steven A. Serati, Teresa K. Ewing

Proceedings Volume 3384, Photonic Processing Technology and Applications II; (1998) https://doi.org/10.1117/12.317657
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

A new high throughput imaging spectrometer is described that utilizes a digitally switched polarizing interferometer to sample the complex autocorrelation of the input spectrum. Using a single filter stage and high speed digital liquid crystal switches, the spectrometer can provide rapid measurements of power spectra using a simple, easily driven, light efficient structure. The spectrometer is well suited to visible/near infrared operation, due to its use of path-length differences in crystals, rather than free space path length differences. The spectrometer provides accurate and stable steps in path length difference from zero to hundreds of waves.

Citation Download Citation

Gary D. Sharp, Ping Wang, Steven A. Serati, and Teresa K. Ewing "Liquid crystal Fourier transform spectrometer", Proc. SPIE 3384, Photonic Processing Technology and Applications II, (31 July 1998); https://doi.org/10.1117/12.317657

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