Abstract
A design concept of a wire-grid polarizer, which is based on the effective-medium theory, has been proposed. The effective indices of a wire-grid grating are evaluated with the effective-medium theory. The results show that, the wire-grid grating acts as a metal for TE polarization, but it behaves like a dielectric material for TM polarization. According to the different effective optical properties of the wire-grid grating for the different polarizations, a wire-grid polarizer with a high polarization ratio can be obtained by enhancing both the transmission for TM polarization and the reflection for TE polarization.
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This work is supported by Grants for Scientific Research of BSKY (XJ201216) from Anhui Medical University and the Young and Middle-age Backbone Teachers of Anhui Medical University and the Talent Foundation of High Education of Anhui Province for Outstanding Youth (NO. 2010SQRL077ZD) and Youth Scientific research Funding Project of Anhui University and Doctoral Scientific Research Start-up Funding Project of Anhui University.
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Liao, YL., Zhao, Y. Design of wire-grid polarizer with effective medium theory. Opt Quant Electron 46, 641–647 (2014). https://doi.org/10.1007/s11082-013-9768-z
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DOI: https://doi.org/10.1007/s11082-013-9768-z