文献类型：期刊文献

英文题名：Self-polarizing terahertz liquid crystal phase shifter

作者：Lin, Xiao-wen[1,2];Wu, Jing-bo[3];Hu, Wei[1,2];Zheng, Zhi-gang[1,2,4];Wu, Zi-jian[1,2];Zhu, Ge[1,2];Xu, Fei[1,2];Jin, Biao-bing[3];Lu, Yan-qing[1,2]

机构：[1]Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China;[2]Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China;[3]Nanjing Univ, RISE, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China;[4]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2011

卷号：1

期号：3

外文期刊名：AIP ADVANCES

收录：;EI(收录号：20122115050283);WOS:【SCI-EXPANDED(收录号:WOS:000302139600033)】；

基金：This work is sponsored by 973 programs with contract No. 2011CBA00200, 2010CB327800 and 2007CB310404, NSFC programs under contract No. 10874080, 60977039 and 61071009 and the NSFJP program under contract No. BK2010360. The authors thank Prof. Nan Lu and Yandong Wang for their kind support in Au deposition.

语种：英文

外文关键词：Nematic liquid crystals - Diffraction gratings - Optical instruments - Transparent electrodes - Phase shifters

摘要：Using sub-wavelength metallic gratings as both transparent electrodes and broadband high-efficiency polarizers, a highly-compact self-polarizing phase shifter is demonstrated by electrically tuning the effective birefringence of a nematic liquid crystal cell. The metal grating polarizers ensure a good polarizing efficiency in the range of 0.2 to 2 THz. Phase shift of more than pi/3 is achieved in a 256 mu m-thick cell with a saturation root mean square voltage of around 130 V in this integrated device. Copyright 2011 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [doi:10.1063/1.3626560]