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

Wenrui Guo; Zhiwei Li; Hongtao Gao; Liangping Xia; Lifang Shi; Qiling Deng; Chunlei Du

doi:10.1117/12.2014892

31 January 2013 Design of infrared polarizer based on sub-wavelength metal wire grid

Wenrui Guo, Zhiwei Li, Hongtao Gao, Liangping Xia, Lifang Shi, Qiling Deng, Chunlei Du

Proceedings Volume 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation; 87593I (2013) https://doi.org/10.1117/12.2014892
Event: International Symposium on Precision Engineering Measurement and Instrumentation 2012, 2012, Chengdu, China

Abstract

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 Magnetic（TM） 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.

Citation Download Citation

Wenrui Guo, Zhiwei Li, Hongtao Gao, Liangping Xia, Lifang Shi, Qiling Deng, and Chunlei Du "Design of infrared polarizer based on sub-wavelength metal wire grid", Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 87593I (31 January 2013); https://doi.org/10.1117/12.2014892

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available