Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate

Optics Letters
Cho-Fan HsiehCi-Ling Pan

Abstract

Phase shift exceeding tau/2 at 1 THz is demonstrated by using electrically controlled birefringence in a homeotropically aligned nematic liquid crystal (E7) cell, 570 microm in thickness. The driving voltage required for a phase shift of 90 degrees is 125 V (rms). We demonstrate that the phase shifter works as an electrically switchable quarter-wave plate at 1 THz. The device can also be used as an electrically tuned phase compensator around the quarter-wave point near 1 THz.

References

Mar 6, 2003·Nature Materials·Bradley Ferguson, Xi-Cheng Zhang

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Citations

Mar 1, 2017·Optics Express·Yo InoueHiroshi Moritake
Jan 23, 2009·Optics Express·Xomalin G PeraltaJohn F O'Hara
Dec 10, 2009·Optics Express·Liangliang ZhangYuejin Zhao
Jul 1, 2010·Optics Express·Maik SchellerMartin Koch
Sep 25, 2019·Research : a Science Partner Journal·Qiong HeLei Zhou
Apr 14, 2009·Applied Optics·Christian JördensMartin Koch
Feb 8, 2013·Optics Express·Yasuaki MonnaiHiroyuki Shinoda
Jan 26, 2012·Optics Express·Benedikt SchergerMartin Koch
Aug 16, 2017·Scientific Reports·Kechao SongMingwei Wang
Jan 16, 2019·Optics Express·Jan OrnikMartin Koch
May 4, 2016·Optics Express·Yan DuZhongxiang Zhou
Dec 3, 2016·Scientific Reports·Moumita DuttaRuyan Guo
Jun 8, 2017·Reports on Progress in Physics·Mohammed R HashemiMona Jarrahi
Oct 10, 2013·Optics Express·Yang WuHyunsoo Yang

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