Magnetically tunable metallic photonic crystals immersed in liquid crystal for terahertz wave

Ru-Pin Pan; Chih-Chang Shih; Tsung-Ta Tang; Yow-Gwo Wang; Hsin-Ying Wu; Chia-Jen Lin; Ci-Ling Pan

doi:10.1117/12.915594

10 February 2012 Magnetically tunable metallic photonic crystals immersed in liquid crystal for terahertz wave

Ru-Pin Pan, Chih-Chang Shih, Tsung-Ta Tang, Yow-Gwo Wang, Hsin-Ying Wu, Chia-Jen Lin, Ci-Ling Pan

Proceedings Volume 8279, Emerging Liquid Crystal Technologies VII; 82790J (2012) https://doi.org/10.1117/12.915594
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We investigated the phenomena of a metallic photonic crystal (MPC) immersed in liquid crystal. According to our design, the photonic crystal has specific photonic band gap (PBG) and can be utilized as a filter. The device is filled with nematic liquid crystal (NLC), MDA-00-3461. The refractive indices of NLC can be magnetically controlled by reorienting the NLC molecules. Consequently, the corresponding PBG and the filtering performance of the device are tunable. According to our experimental results, the low frequency boundary of PBG at 0.121 THz can be blue shifted by 6.17 GHz, and the high frequency boundary of PBG at 0.175 THz can be shifted to the blue by 11.04 GHz. As a tunable THz filter, the peak transmittance at 0.187 THz can be blue shifted by 3.66 GHz.

Citation Download Citation

Ru-Pin Pan, Chih-Chang Shih, Tsung-Ta Tang, Yow-Gwo Wang, Hsin-Ying Wu, Chia-Jen Lin, and Ci-Ling Pan "Magnetically tunable metallic photonic crystals immersed in liquid crystal for terahertz wave", Proc. SPIE 8279, Emerging Liquid Crystal Technologies VII, 82790J (10 February 2012); https://doi.org/10.1117/12.915594

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