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13 September 2012 Characterization of photochromic computer-generated holograms for optical testing
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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.
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Giorgio Pariani, Chiara Bertarelli, Andrea Bianco, Frederik Schaal, and Christof Pruss "Characterization of photochromic computer-generated holograms for optical testing", Proc. SPIE 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II, 845010 (13 September 2012);

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