受抑全内反射的偏振分光器

颜鹰; 王聪; 李晓平; 史铁林

红外与激光工程, 2005, 34 (4): 406, 网络出版: 2006-05-25

受抑全内反射的偏振分光器

Polarizing beam splitter based on frustrated total internal reflection

论文大纲

颜鹰 ^*王聪李晓平史铁林

作者单位

华中科技大学,微系统研究中心,湖北,武汉,430074

偏振分光器受抑全内反射消光比带宽 PBS FTIR（frustrated total internal reflection） Extinction ratio Broadband

摘要

概述了薄膜偏振分光器的研究现状及其主要特点,对不同于MacNeille设计原理的受抑全内反射偏振分光器进行了研究,这种偏振分光器基于受抑全内反射和薄膜干涉原理,当入射角大于临界角时,在宽波段宽角度范围内反射P偏振光,透射S偏振光.重点分析这种偏振分光器的设计原理,设计了波长范围为420～680 am、空气中的入射角范围为±10°、膜系的消光比为Ts/Tp≥1000的用于背投系统的薄膜偏振分光器.

Abstract

The existing status and main characters of thin- film polarizing beam splitter (PBS) are pre- sented and demonstrated. Frustrated total internal reflection and thin film interference are simultaneously employed to allow S- polarized light to be transmitted and P- polarized light to be reflected over a wide range of wavelengths and angles of incidence. The PBS is operated at angles greater than the critical an- gle. The basic design principle is emphatically analyzed. The design of PBS is applied in projection sys- tem. The spectral wavelength region of the design is 420～680 nm,with the range of incident angle of ± 10°in air.The extinction ratios for the reflected and transmitted beams are over 1000.

参考文献

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颜鹰, 王聪, 李晓平, 史铁林. 受抑全内反射的偏振分光器[J]. 红外与激光工程, 2005, 34(4): 406. 颜鹰, 王聪, 李晓平, 史铁林. Polarizing beam splitter based on frustrated total internal reflection[J]. Infrared and Laser Engineering, 2005, 34(4): 406.

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