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Proceedings Paper

Magnetically tunable metallic photonic crystals immersed in liquid crystal for terahertz wave
Author(s): Ru-Pin Pan; Chih-Chang Shih; Tsung-Ta Tang; Yow-Gwo Wang; Hsin-Ying Wu; Chia-Jen Lin; Ci-Ling Pan
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Paper 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.

Paper Details

Date Published: 10 February 2012
PDF: 8 pages
Proc. SPIE 8279, Emerging Liquid Crystal Technologies VII, 82790J (10 February 2012); doi: 10.1117/12.915594
Show Author Affiliations
Ru-Pin Pan, National Chiao Tung Univ. (Taiwan)
Chih-Chang Shih, National Chiao Tung Univ. (Taiwan)
Tsung-Ta Tang, National Chiao Tung Univ. (Taiwan)
Yow-Gwo Wang, National Chiao Tung Univ. (Taiwan)
Hsin-Ying Wu, National Chiao Tung Univ. (Taiwan)
Chia-Jen Lin, National Chiao Tung Univ. (Taiwan)
Ci-Ling Pan, National Tsing Hua Univ. (Taiwan)

Published in SPIE Proceedings Vol. 8279:
Emerging Liquid Crystal Technologies VII
Liang-Chy Chien, Editor(s)

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