Design of infrared polarizer based on sub-wavelength metal wire grid

doi:10.1117/12.2014892

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 微纳制造与系统集成研究中心

	Design of infrared polarizer based on sub-wavelength metal wire grid
	Guo, Wenrui 1; Li, Zhiwei 1; Gao, Hongtao 1; Xia, Liangping 1; Shi, Lifang 1; Deng, Qiling 1; Du, Chunlei2
	2013
会议日期	August 8, 2012 - August 11, 2012
会议地点	Chengdu, China
DOI	10.1117/12.2014892
通讯作者	Li, Z. (lzw@ioe.ac.cn)
英文摘要	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.
会议录	8th International Symposium on Precision Engineering Measurements and Instrumentation
语种	英语
ISSN号	0277786X
内容类型	会议论文
源URL	[http://119.78.100.138/handle/2HOD01W0/4726]
专题	微纳制造与系统集成研究中心
作者单位	1.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
推荐引用方式 GB/T 7714	Guo, Wenrui,Li, Zhiwei,Gao, Hongtao,et al. Design of infrared polarizer based on sub-wavelength metal wire grid[C]. 见:. Chengdu, China. August 8, 2012 - August 11, 2012.