Comparison of planar focusing reflectors based on monolithic HCGs with parabolic mirrors

Paulina Komar; Marcin Gębski; Tomasz G. Czyszanowski; Maciej Dems; Michał Wasiak

doi:10.1117/12.2577014

5 March 2021 Comparison of planar focusing reflectors based on monolithic HCGs with parabolic mirrors

Paulina Komar, Marcin Gębski, Tomasz G. Czyszanowski, Maciej Dems, Michał Wasiak

Proceedings Volume 11695, High Contrast Metastructures X; 116951O (2021) https://doi.org/10.1117/12.2577014
Event: SPIE OPTO, 2021, Online Only

Abstract

Monolithic high contrast grating (MHCG) is a particular type of a grating where both substrate and grating bars are made of the same material, in our case this is GaAs. Here we present the numerical simulations of GaAs-based planar focusing MHCG mirrors. In particular we compare the dependence of their reflectivity and the maximum intensity of the reflected light at the focal point with conventional parabolic reflectors of the same size and identical focal lengths. Our study is performed for both TE and TM polarizations. Moreover, we analyze the influence of geometrical imperfections (i.e. local disturbance of the height, period or fill factor of the grating) on the focusing properties of the grating mirrors. The project (POIR.04.04.00-00-4358/17) is carried out within the HOMING programme of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund.

Conference Presentation

Citation Download Citation

Paulina Komar, Marcin Gębski, Tomasz G. Czyszanowski, Maciej Dems, and Michał Wasiak "Comparison of planar focusing reflectors based on monolithic HCGs with parabolic mirrors", Proc. SPIE 11695, High Contrast Metastructures X, 116951O (5 March 2021); https://doi.org/10.1117/12.2577014

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