THz-wave sensing via pump and signal wave detection interacted with evanescent THz waves

被引：3
|
作者：
Akiba, Takuya [1 ]
Kaneko, Naoya [1 ]
Suizu, Koji [1 ]
Miyamoto, Katsuhiko [2 ]
Omatsu, Takashige [2 ,3 ]
机构：
[1] Chiba Inst Technol, Narashino, Chiba 2750016, Japan
[2] Chiba Univ, Inage Ku, Chiba 2638522, Japan
[3] CREST, Chiyoda Ku, Tokyo 1020075, Japan
来源：
OPTICS LETTERS | 2013年 / 38卷 / 18期
基金：
日本科学技术振兴机构;
关键词：
TOTAL-REFLECTION SPECTROSCOPY; BOUNCE LASER; GENERATION; CRYSTAL; SYSTEM;
D O I：
10.1364/OL.38.003687
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a novel sensing technique that uses an evanescent terahertz (THz) wave, without detecting the THz wave directly. When a THz wave generated by Cherenkov phase matching via difference frequency generation undergoes total internal reflection, the evanescent THz wave is subject to a phase change and an amplitude decrease. The reflected THz wave, under the influence of the sample, interferes with the propagating THz wave and the changing electric field of the THz wave interacts with the electric field of the pump waves. We demonstrate a sensing technique for detecting changes in the electric field of near-infrared light, transcribed from changes in the electric field of a THz wave. (C) 2013 Optical Society of America
引用
收藏
页码：3687 / 3689
页数：3
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