Volume phase holographic echelle grating: a theoretical study

Andrea Bianco; Giorgio Pariani

doi:10.1117/12.857257

20 July 2010 Volume phase holographic echelle grating: a theoretical study

Andrea Bianco, Giorgio Pariani

Proceedings Volume 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation; 77394O (2010) https://doi.org/10.1117/12.857257
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

Volume phase holographic gratings (VPHGs) are becoming fundamental dispersing elements in astronomical instrumentation. Here it will be described the efficiency behavior of such dispersing elements at high diffraction orders for understanding the possible use as echelle gratings. The efficiency is calculated based on RCWA analysis and different parameters are changed/optimized, i.e film thickness, refractive index modulation and profile. The results show that the VPHGs are not suitable for working at high orders in the classical configurations.

Citation Download Citation

Andrea Bianco and Giorgio Pariani "Volume phase holographic echelle grating: a theoretical study", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 77394O (20 July 2010); https://doi.org/10.1117/12.857257

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