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Proceedings Paper

Characterization of photochromic computer-generated holograms for optical testing
Author(s): Giorgio Pariani; Chiara Bertarelli; Andrea Bianco; Frederik Schaal; Christof Pruss
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Paper Abstract

We investigate the possibility to produce photochromic CGHs with maskless lithography methods. For this purpose, optical properties and requirements of photochromic materials will be shown. A diarylethene-based polyurethane is developed and characterized. The resolution limit and the in uence of the writing parameters on the produced patterns, namely speed rate and light power, have been determined. After the optimization of the writing process, gratings and Fresnel Zone Plates are produced on the photochromic layer and diraction eciencies are measured. Improvements and perspectives will be discussed.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 845010 (13 September 2012); doi: 10.1117/12.925928
Show Author Affiliations
Giorgio Pariani, Politecnico di Milano (Italy)
INAF - Osservatorio Astronomico di Brera (Italy)
Chiara Bertarelli, Politecnico di Milano (Italy)
Istituto Italiano di Tecnologia (Italy)
Andrea Bianco, INAF - Osservatorio Astronomico di Brera (Italy)
Frederik Schaal, Univ. Stuttgart (Germany)
Christof Pruss, Univ. Stuttgart (Germany)


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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