Open AccessGoos-Hänchen shifts of reflected terahertz wave on a COC-air interface
Author(s) -
Qingmei Li,
Bo Zhang,
Jingling Shen
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.006480
Subject(s) - terahertz radiation , optics , prism , total internal reflection , materials science , reflection (computer programming) , terahertz spectroscopy and technology , physics , optoelectronics , computer science , programming language
Goos-Hänchen (GH) shifts of terahertz wave reflected on the Cyclo-Olefin Copolymer (COC)-air interface was investigated in simulation and experiment. The relationship between the GH shifts with the incident angle and the frequency of incident wave were calculated to get a reference for the simulation and experiment. The reflected GH shift was measured on the COC-air interface when a terahertz wave with the frequency of 0.206 THz was incident to a COC double-prism. By changing the thickness of the air layer we find experimentally and simulatively that the GH shift and the energy of the reflected wave increases with the increase of the air layer thickness. The study of GH shift can provide useful information for applications of THz waves in sensor and power delivery systems.