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Proceedings Paper

Materials for VPHGs: practical considerations in the case of astronomical instrumentation
Author(s): Andrea Bianco; Giorgio Pariani; Alessio Zanutta; Chiara Bertarelli
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Paper Abstract

Volume Phase Holographic Gratings are interesting dispersing elements for astronomical instrumentation. An important point, in the realization of the grating, is the choice of the holographic material. Dichromated Gelatines (DCGs) are the best candidate, but they show some drawback especially regarding their water sensitivity and the complex developing process required to enhance their performances. New holographic materials are becoming interesting, such as photopolymers and photochromic materials. An exhaustive review of these classes of materials will be reported and their performances compared to those of DCGs, focusing mainly to the astronomical instrumentation field.

Paper Details

Date Published: 13 September 2012
PDF: 18 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 84502W (13 September 2012); doi: 10.1117/12.925366
Show Author Affiliations
Andrea Bianco, INAF - Osservatorio Astronomico di Brera (Italy)
Giorgio Pariani, INAF - Osservatorio Astronomico di Brera (Italy)
Alessio Zanutta, INAF - Osservatorio Astronomico di Brera (Italy)
Politecnico di Milano (Italy)
Chiara Bertarelli, Politecnico di Milano (Italy)


Published in SPIE Proceedings Vol. 8450:
Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
Ramón Navarro; Colin R. Cunningham; Eric Prieto, Editor(s)

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