We explore plasmon-enhanced wire-gird polarizers (WGPs) to achieve improved polarimetric performance with more relaxed fabrication parameters compared to conventional WGP. A WGP designed with a blazed wire-grid profile was considered for plasmonic enhancement. The results show that a blazed WGP can achieve extremely high polarimetric extinction at a longer wire-grid period (Λ) compared to conventional WGP structure. Under the optimum geometrical parameters, a blazed WGP may attain an extinction ratio of over 40 dB at Λ = 800 nm, which may allow photolithography for fabrication. In contrast, conventional WGPs obtained comparable performance at Λ = 200 nm, requiring more difficult lithographic techniques. The study can therefore be of significant importance for WGPs to be more widely available for diverse applications.
Bibliographical noteFunding Information:
National Research Foundation of Korea (NRF) grants (NRF-2012R1A4A1029061, 2015R1A2A1A10052826, NRF-2014R1A1A3049671); Yonsei University Future-Leading Research Initiative (2015-22-0147).
© 2017 Optical Society of America.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics