期刊
OPTICAL MATERIALS EXPRESS
卷 6, 期 1, 页码 252-263出版社
OPTICAL SOC AMER
DOI: 10.1364/OME.6.000252
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资金
- European Community (FP7) through the OPTICON project (Optical Infrared Co-ordination Network for astronomy)
- INAF through the TECNO-INAF Innovative tools for high resolution and infrared spectroscopy based on non-standard volume phase holographic gratings
The design and manufacturing of high efficiency and reliable volume phase holographic optical elements require photosensitive material where it is possible to finely control the refractive index modulation. Bayfol HX photopolymers show this feature together with other interesting advantages, in particular the self-developing and the large refractive index modulation. In this paper, the design of Volume Phase Holographic Gratings (VPHGs) is reported underlying the relationship of gratings' performances with the refractive index modulation. The trend of this property with the change of the laser power density and the ratio of the two writing beams is shown. Based on these results, VPHGs for astronomical instrumentation have been designed and manufactured. (C)2015 Optical Society of America
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