Fabry-Perot tunable filter for the visible and near IR using nematic liquid crystals

Domenico Bonaccini; Luca Casini; Paolo Stefanini

doi:10.1117/12.22851

1 November 1990 Fabry-Perot tunable filter for the visible and near IR using nematic liquid crystals

Domenico Bonaccini, Luca Casini, Paolo Stefanini

Proceedings Volume 1334, Current Developments in Optical Engineering IV; (1990) https://doi.org/10.1117/12.22851
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

A nematic liquid crystal Fabry-Perot interferometer (NLC-FPI) based on nematic material in a parallel configuration is described, for applications in astronomy. This device allows spectral chopping for an efficient removal of background radiation, when the source is embedded in a strong background such as the solar corona or IR sources. The primary design is intended for two-dimensional spectroscopic imaging. This method is also very useful for precision spectropolarimetry. The NLC-FPI is a tunable, double-channel filtec we present some theoretical and experimental results obtained on a first generation pmtotype.

Citation Download Citation

Domenico Bonaccini, Luca Casini, and Paolo Stefanini "Fabry-Perot tunable filter for the visible and near IR using nematic liquid crystals", Proc. SPIE 1334, Current Developments in Optical Engineering IV, (1 November 1990); https://doi.org/10.1117/12.22851

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