Wafer-based diffractive polarizer design for low-reflectivity applications

Panfilo C. Deguzman; Yang Cao; Thomas J. SuleskiMichael A. FiddyRich JonesRobert TeKolsteJim Morris

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Wafer-based diffractive polarizer design for low-reflectivity applications

机译：基于晶圆的衍射偏振器设计，适用于低反射率应用

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摘要

We present designs of a diffractive polarizer having low zeroth-order reflectivity that is compact, potentially mass-producible and cost-effective, and compatible for high-power applications. It consists of subwavelength grating structures superimposed over a diffraction grating. Using rigorous coupled wave analysis, we optimized the parameters of multilevel grating structures to achieve antireflection for both incident TE and TM polarization states with one polarization passing in the zeroth order and the other into the first and higher orders. We focused on polarizer designs for the 1.31-(mu)m wavelength range, and the theoretical values for zeroth-order reflection were calculated to be 0.01percent for TE and 0.29percent for TM modes. The zeroth-order transmission efficiencies were 97.2percent for TE and 0.01percent for TM modes. A prototype of one design was fabricated and tested to verify the functionality of the device, and the zeroth-order reflection was determined to be 1.2percent and 3.5percent for the two modes.

机译：我们提出了一种衍射偏振器的设计，该衍射器具有低零阶反射率，结构紧凑，具有潜在的大规模生产性和成本效益，并且与高功率应用兼容。它由叠加在衍射光栅上的亚波长光栅结构组成。通过严格的耦合波分析，我们优化了多能级光栅结构的参数，实现了入射TE和TM偏振态的抗反射，一个偏振以零阶传递，另一个偏振以一阶和更高阶传递。我们专注于 1.31 （μ）m 波长范围的偏振片设计，计算出 TE 模式的零阶反射理论值为 0.01%，TM 模式的理论值为 0.29%。TE模式的零阶传输效率为97.2%，TM模式的零阶传输效率为0.01%。制作了一种设计的原型并进行了测试，以验证器件的功能，并确定两种模式的零阶反射分别为1.2%和3.5%。

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来源
《Optical Engineering》 |2007年第3期|038001-1-038001-8-0|共8页
作者
Panfilo C. Deguzman; Yang Cao; Thomas J. SuleskiMichael A. FiddyRich JonesRobert TeKolsteJim Morris;
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作者单位

University of North Carolina at Charlotte Center for Optoelectronics and Optical Communications 9201 University City Boulevard Charlotte, North Carolina 28223;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学仪器;
关键词
polarizing beam splitters; subwavelength grating; diffractive polarizer; antireflection; rigorous coupled wave analysis;

机译：偏振分光镜;亚波长光栅;衍射偏振片;抗反射;严格的耦合波分析;

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Wafer-based diffractive polarizer design for low-reflectivity applications

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