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Proceedings Paper

Photopolymer based VPHGs: from materials to sky results
Author(s): A. Zanutta; E. Orselli; T. Fäcke; A. Bianco
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Paper Abstract

Volume Phase Holographic Gratings cover a relevant position as transmission dispersing elements in astronomical spectrographs and each astronomical observation could take advantage of specific dispersive elements with features tailored for achieving the best performances. The design and manufacturing of high efficiency and reliable VPHGs require photosensitive materials where it is possible to control both the refractive index modulation and the film thickness. By means of Bayfol® HX photopolymers, we designed and manufactured six VPHGs for astronomical instrumentation in a GRISM configuration. We demonstrated how photopolymers are reliable holographic materials for making astronomical VPHGs with performances comparable to those provided by VPHGs based on Dichromated Gelatins (DCGs), but with a much simpler production process.

Paper Details

Date Published: 22 July 2016
PDF: 12 pages
Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99123B (22 July 2016); doi: 10.1117/12.2230893
Show Author Affiliations
A. Zanutta, INAF - Osservatorio Astronomico di Brera (Italy)
E. Orselli, Covestro Deutschland AG (Germany)
T. Fäcke, Covestro Deutschland AG (Germany)
A. Bianco, INAF - Osservatorio Astronomico di Brera (Italy)


Published in SPIE Proceedings Vol. 9912:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Ramón Navarro; James H. Burge, Editor(s)

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