Design and development of the high-resolution spectrograph HERMES and the unique volume phase holographic gratings

J. A. C. Heijmans; L. Gers; B. Faught

doi:10.1117/12.897273

21 September 2011 Design and development of the high-resolution spectrograph HERMES and the unique volume phase holographic gratings

J. A. C. Heijmans, L. Gers, B. Faught

Author Affiliations +

Proceedings Volume 8167, Optical Design and Engineering IV; 81671A (2011) https://doi.org/10.1117/12.897273
Event: SPIE Optical Systems Design, 2011, Marseille, France

Abstract

We report on the grating development for the High Efficiency and Resolution Multi Element Spectrograph (HERMES). This paper discusses the challenges of designing, optimizing, and tolerancing large aperture volume phase holographic (VPH) gratings for HERMES. The high spectral resolution requirements require steep angles of incidence, of 67.2 degrees, and high line densities, ranging between 2400 and 3800 lines per mm, resulting in VPH gratings that are highly s-polarized that push the fabrication process to its limits.

Citation Download Citation

J. A. C. Heijmans, L. Gers, and B. Faught "Design and development of the high-resolution spectrograph HERMES and the unique volume phase holographic gratings", Proc. SPIE 8167, Optical Design and Engineering IV, 81671A (21 September 2011); https://doi.org/10.1117/12.897273

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