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题名:
Rays propagation in optical tunnel
作者: Liao, ZJ ; Xing, TW
出版日期: 2008
会议名称: PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
中文摘要: Optical tunnels are widespread in mircolithographic illumination systems. It reshapes the rays and illuminates masks with dose-and-directional uniformity. Rays were focused the input end, reflected by the walls of the optical tunnel and lapped over the output end. According to rays reflecting by walls, optical tunnel was expanded along the reflecting walls. The approaches of rays' propagation in the optical tunnel were given. It indicates the luminance of the source is important for the optical tunnel performance; the defect of small inclination between bottom and top walls are neglectable for the uniformity of the output end. The taper of tunnel leads to the dissimilar of rays NA between output end and input end. The relation of the NA was given. The indications were confirmed by the simulations. When a collimated beam was focused on the input end, simulations show that the dropping of nonuniformity was unsmooth as the optical tunnel length increasing. When the luminance turned to a Gaussian distribution, the uniformity improved greatly. The uniformity of the output will be insensitivity with a fitting luminance. The nonuniformity would be less than 0.7% when the radius diminished less than the half. The edges' defect degrade the uniformity greatly both confirmed by the simulations and experiments. It shows that optical tunnels with sharp edges are excellent optical integrators with fitting luminance sources.
收录类别: Ei
语种: 中文
卷号: 6834
ISSN号: 0361-0761
文章类型: 会议论文
页码: A8340-A8340
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1804
Appears in Collections:应用光学研究室(二室)_会议论文

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Recommended Citation:
Liao, ZJ,Xing, TW. Rays propagation in optical tunnel[C]. 见:PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE).
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文件名: 2008-078.pdf
格式: Adobe PDF
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