Characterization of photochromic Computer Generated Holograms for optical testing

被引：2
|
作者：
Pariani, Giorgio [1 ,2 ]
Bertarelli, Chiara [1 ,3 ]
Bianco, Andrea [2 ]
Schaal, Frederik [4 ]
Pruss, Christof [4 ]
机构：
[1] Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, Pzza L da Vinci 32, I-20133 Milan, Italy
[2] Osserv Astron Brera, Ist Nazl Astro Fis, I-23807 Merate, Italy
[3] CNST, I-20133 Milan, Italy
[4] Univ Stuttgart, Inst Tech Opt, D-70569 Stuttgart, Germany
来源：
MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND INSTRUMENTATION II | 2012年 / 8450卷
关键词：
CGH; aspheres; photochromism; diarylethenes; maskless lithography;
D O I：
10.1117/12.925928
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 influence 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 diffraction efficiencies are measured. Improvements and perspectives will be discussed.
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页数：8
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