1 November 1990 Fabry-Perot tunable filter for the visible and near IR using nematic liquid crystals
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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.
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Domenico Bonaccini, Domenico Bonaccini, Luca Casini, Luca Casini, Paolo Stefanini, 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); doi: 10.1117/12.22851; https://doi.org/10.1117/12.22851
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