Nonpolarizing beam splitter designed by frustrated total internal reflection inside a glass cube |
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Authors: | Xu Xueke Shao Jianda Fan Zhengxiu |
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Affiliation: | Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China. xuxk@opfilm.com |
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Abstract: | A method for the design of an all-dielectric nonpolarizing prism beam splitter utilizing the principle of frustrated total internal reflection is reported. The nonpolarizing condition for a prism beam splitter is discussed, and some single layer design examples are elaborated. The concept can be applied to a wide range of wavelengths and arbitrary transmittance values, and with the help of a computer design program examples of 400-700 nm, T(p)=T(s)=0.5+/-0.01, with incident angles of 45 degrees and 62 degrees are given. In addition, the sensitivity and application of the design are also discussed. |
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