Large-area multilayer infrared nano-wire grid polarizers
Time: 2016-03-23 02:23  Click:758

Infrared Physics & Technology

Volume 75, March 2016, Pages 77–81

Alexey E. Gayduk, ,Victor Ya. Prinz,Vladimir A. Seleznev,Sergey N. Rechkunov
 
Rzhanov Institute of Semiconductor Physics, Russian Academy of Sciences, Siberian Branch, Novosibirsk 630090, Russia
 
Abstract
We have developed a technology for fabricating infrared polarizers based on double- and four-layer metal-dielectric nanogratings. Due to the use of nanoimprint lithography, the size of fabricated samples with 190-nm grating period could be made exceeding 170 cm2. The fabricated polarizers are flexible, and they have high quality over the entire area of the sample. Spectrophotometric measurements and numerical simulations have showed that the polarizers exhibited a large transmission coefficient and a high extinction ratio (over 3 ⋅ 104). In order to expand applications of polarizers to the bio-inspired wide field-of-view systems, technology for fabricating polarizers on curved surfaces prepared by 3D printing has been developed. The obtained results offer much promise for polarimetry purposes.
 
Keywords
Infrared wire grid polarizer;Nanoimprint lithography;3D printing;Polarization;Extinction ratio
 
Full text is available at http://www.sciencedirect.com/science/article/pii/S1350449515301742

 

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