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Design of infrared polarizer based on sub-wavelength metal wire grid
Guo, Wenrui1; Li, Zhiwei1; Gao, Hongtao1; Xia, Liangping1; Shi, Lifang1; Deng, Qiling1; Du, Chunlei2; Li, Z. (lzw@ioe.ac.cn)
Volume8759
Pages87593I
2013
Language英语
ISSN0277786X
DOI10.1117/12.2014892
Indexed ByEi
Subtype会议论文
AbstractHigh performance infrared polarizer with broad band is required for various infrared applications. The conventional infrared polarizer, based on the birefringence effect of natural crystal, is cost-consuming in fabrication and can hardly be integrated into micro-optical systems due to its large bulk. In this paper, an infrared polarizer is proposed in the spectrum from 3 to 19 μm based on sub-wavelength metal wire grid. The dependence of the performance on some key parameters, including metal materials, geometrical parameters, has been deeply investigated by using the Finite-Difference Time-Domain (FDTD) method. The results show that Au wire-grids have a higher transmittance for the Transverse MagneticiˆTMi mode light than that of other metal materials, and both the grid period and the grid thickness have important impact on the performance. Based on these observations, a polarizer has been designed by choosing the optimal value of related parameters. Numerical simulation suggests that the designed infrared wire grid polarizer have advantages of broad band, high TM polarization transmission efficiencies and high extinction ratios. The transmission efficiencies of TM polarization are larger than 59.3%, and the extinction ratios range from 28.6 to 44.6 dB in that range of the spectrum. © 2013 SPIE.; High performance infrared polarizer with broad band is required for various infrared applications. The conventional infrared polarizer, based on the birefringence effect of natural crystal, is cost-consuming in fabrication and can hardly be integrated into micro-optical systems due to its large bulk. In this paper, an infrared polarizer is proposed in the spectrum from 3 to 19 μm based on sub-wavelength metal wire grid. The dependence of the performance on some key parameters, including metal materials, geometrical parameters, has been deeply investigated by using the Finite-Difference Time-Domain (FDTD) method. The results show that Au wire-grids have a higher transmittance for the Transverse MagneticiˆTMi mode light than that of other metal materials, and both the grid period and the grid thickness have important impact on the performance. Based on these observations, a polarizer has been designed by choosing the optimal value of related parameters. Numerical simulation suggests that the designed infrared wire grid polarizer have advantages of broad band, high TM polarization transmission efficiencies and high extinction ratios. The transmission efficiencies of TM polarization are larger than 59.3%, and the extinction ratios range from 28.6 to 44.6 dB in that range of the spectrum. © 2013 SPIE.
Conference NameProceedings of SPIE: Eighth International Symposium on Precision Engineering Measurements and Instrumentation
Conference Date2013
Citation statistics
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7657
Collection微电子装备总体研究室(四室)
Corresponding AuthorLi, Z. (lzw@ioe.ac.cn)
Affiliation1. State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
2. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China
Recommended Citation
GB/T 7714
Guo, Wenrui,Li, Zhiwei,Gao, Hongtao,et al. Design of infrared polarizer based on sub-wavelength metal wire grid[C],2013:87593I.
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