Optimization of a volume phase holographic grism for astronomical observation using a photopolymer
Optimization of a volume phase holographic grism for astronomical observation using a photopolymer
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使用光聚合物进行天文观测的体积相位全息棱镜的优化
DOI：
10.1117/12.473964
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Kodate
中科院分区：
文献类型：
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作者：
Keiko Oka;Akiko Yamada;Y. Komai;E. Watanabe;N. Ebizuka;T. Teranishi;M. Kawabata;K. Kodate
我们已经开发了grisms，设计用于夏威夷莫纳克亚山上的8.2米斯巴鲁望远镜的天文观测。为了提高效率和成本，我们提出了一种将体相全息（VPH）光栅夹在两个棱镜之间的新型光栅，称为“VPH光栅”。高沟槽密度的VPH光栅需要光敏材料。本文采用了高粘度的液态光聚合物。利用严格耦合波分析（RCWA）中折射率调制光栅的有效分析程序，我们能够设计并制造出具有良好性能的光栅样机。实验结果表明，实验用VPH光栅具有良好的性能。我们进一步的目标是利用一种比现有材料具有更大折射率调制的新型光聚合物来开发具有更高色散和效率的VPH光栅。
We have developed grisms, designed for astronomical observation with the 8.2m Subaru telescope on Mauna Kea, Hawaii. In order to improve both efficiency and cost, we proposed a new type of grism by sandwiching a volume phase holographic (VPH) grating between two prisms, dubbed 'VPH grism'. Photosensitive materials are required for fabrication of VPH grating with high groove density. In this paper, we employed the liquid photopolymer with high viscosity. Using the analysis program valid for the refractive index modulation grating of the rigorous coupled wave analysis (RCWA), we were able to design and fabricate a grism prototype with good performance. From the data we obtained, it was ascertained that the experimental VPH grism had excellent performance. We further aimed to develop a VPH grism with higher dispersion and efficiency by making use of a new photopolymer that has larger refractive index modulation than the present material.
Y. Ohno：“具有 p /n 结栅极的谐振隧道晶体管的光致发光研究”Jpn。
DOI：
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发表时间：
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期刊：
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