Transmission holographic grating with improved diffraction efficiency for a flat-field spectrograph

Eduard R. Muslimov

doi:10.1117/12.2019728

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26 March 2013 Transmission holographic grating with improved diffraction efficiency for a flat-field spectrograph

Eduard R. Muslimov

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Proceedings Volume 8787, Optical Technologies for Telecommunications 2012; 87870B (2013) https://doi.org/10.1117/12.2019728
Event: Optical Technologies for Telecommunications 2012, 2012, Ufa, Russian Federation

Abstract

In the paper an approach to improve diffraction efficiency of a transmission concave holographic grating for a flat-field spectrograph is presented. The proposed method is based on numerical optimization of a merit function. Each iteration of the procedure includes definition of the grating recording parameters and the spectrum position from conditions of aberration correction, estimation of the diffraction efficiency by means of the Kogelnik coupled-wave theory equations, and checking boundary conditions. It’s shown on a certain example that the technique allows to obtain high spectral resolution and increase the diffraction efficiency. Modeling results and comparison with accurate RCWA computation are provided as well.

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Eduard R. Muslimov "Transmission holographic grating with improved diffraction efficiency for a flat-field spectrograph", Proc. SPIE 8787, Optical Technologies for Telecommunications 2012, 87870B (26 March 2013); https://doi.org/10.1117/12.2019728

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