Electrically tunable diffraction grating

Sun Il Kim; Jun Hee Choi; Ho Young Ahn; Chan Wook Baik; Jungkwuen An; Chil-Sung Choi; Kyungsuk Pyun; Hong-Seok Lee

doi:10.1117/12.2021994

26 September 2013 Electrically tunable diffraction grating

Sun Il Kim, Jun Hee Choi, Ho Young Ahn, Chan Wook Baik, Jungkwuen An, Chil-Sung Choi, Kyungsuk Pyun, Hong-Seok Lee

Proceedings Volume 8816, Nanoengineering: Fabrication, Properties, Optics, and Devices X; 881607 (2013) https://doi.org/10.1117/12.2021994
Event: SPIE NanoScience + Engineering, 2013, San Diego, California, United States

Abstract

We report on electrically-driven diffraction grating, where refractive index of a liquid crystal (LC) was modulated periodically at an interval of 700 nm by applying an external DC bias to a metallic nanograting (NG). The LC-NG structure exhibited a maximum refractive index variation (Δn) of 0.088 and a diffraction efficiency (η) change of 0-16% with a large diffraction angle of 64° for incident light of 633 nm wavelength. This approach, with the help of faster electronics, provides an opportunity of developing active holograms for real 3D display

Citation Download Citation

Sun Il Kim, Jun Hee Choi, Ho Young Ahn, Chan Wook Baik, Jungkwuen An, Chil-Sung Choi, Kyungsuk Pyun, and Hong-Seok Lee "Electrically tunable diffraction grating", Proc. SPIE 8816, Nanoengineering: Fabrication, Properties, Optics, and Devices X, 881607 (26 September 2013); https://doi.org/10.1117/12.2021994

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