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Proceedings Paper

Electrically controlled terahertz band pass filter with liquid crystal
Author(s): Hui Li; Xinyu Zhang; Tianxu Zhang; Xubang Shen
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Paper Abstract

The paper presents an electrically controlled terahertz (THz) band pass filter with liquid crystal (LC). Considering dichroic filters theory, the filter of two-dimensional metallic photonic crystals is designed as a band pass filter in THz wave band. Electric field is used to change the direction of LC molecules, so that refraction index of LC is changed and correspondingly the peak transmissivity frequency of the THz band pass filter is changed finally. By this way mentioned above electrically controlled THz band-pass filter with LC can be got. The peak transmissivity frequency of the electrically controlled THz band-pass filter is tunable from 0.18THz to 0.19THz by changing electric field.

Paper Details

Date Published: 16 February 2009
PDF: 6 pages
Proc. SPIE 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology, 72770M (16 February 2009); doi: 10.1117/12.821500
Show Author Affiliations
Hui Li, Huazhong Univ. of Science and Technology (China)
Xinyu Zhang, Huazhong Univ. of Science and Technology (China)
Tianxu Zhang, Huazhong Univ. of Science and Technology (China)
Xubang Shen, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7277:
Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology
Jianquan Yao; Shenggang Liu; Xi-Cheng Zhang, Editor(s)

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