Broadband beam steering using chalcogenide-based Risley prisms

Details Broadband beam steering using chalcogenide-based Risley prisms Broadband beam steering using chalcogenide-based Risley prisms

Mar 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011opten..50c3001f&link_type=abstract

Optical Engineering, Volume 50, Issue 3, pp. 033001-033001-5 (2011).

Computer Science

Performance

Infrared Detectors, Optical Glass, Optical Prisms, Lenses, Prisms And Mirrors, Glasses, Quartz

Scientific paper

In this paper, we propose using chalcogenide glasses for improved, large-angle, beam steering of infrared radiation, with minimal spectral dispersion and improved thermal performance over wavelength intervals covering the 2 to 12-μm range. For example, we evaluate that full-angle dispersion in the 2 to 5 μm region for LiF/As2S3 combination should be three times smaller than in the case of LiF/ZnS combination. We also evaluate that using the ZnSe/As2Se3 combination will provide twice as small thermal walk-off than a similar ZnS/Ge system in the 8 to 12-μm region.

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