Manipulating terahertz wave by a magnetically tunable liquid crystal phase grating.
This investigation demonstrates the feasibility of a magnetically tunable liquid crystal phase grating for the terahertz wave. The phase grating can be used as a beam splitter. The ratio of the zeroth and first-order diffracted THz-beams (0.3 THz) polarized in a direction perpendicular to that of the grooves of the grating can be tuned from 4:1 to 1:2. When the THz wave is polarized in any other direction, this device can be operated as a polarizing beam splitter.
Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan 30010, ROC.
Chia-Jen
CJ
Lin
Yu-Tai
YT
Li
Cho-Fan
CF
Hsieh
Ru-Pin
RP
Pan
Ci-Ling
CL
Pan
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D007259:Infrared Rays; D050866:Liquid Crystals / Q000737:chemistry* / Q000528:radiation effects*; D008872:Microwaves; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods