Optical fiber-coupled InGaAs-based terahertz time-domain spectroscopy system

被引：28
|
作者：
Han, Sang-Pil [1 ]
Ko, Hyunsung [1 ]
Kim, Namje [1 ]
Ryu, Han-Cheol [1 ]
Lee, Chul Wook [1 ]
Leem, Young Ahn [1 ]
Lee, Donghun [1 ]
Jeon, Min Yong [2 ]
Noh, Sam Kyu [3 ]
Chun, Hyang Sook [4 ]
Park, Kyung Hyun [1 ]
机构：
[1] ETRI, THz Photon Creat Res Ctr, Taejon 305700, South Korea
[2] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea
[3] KRISS, Global Res Lab, Nano Mat Evaluat Ctr, Taejon 305340, South Korea
[4] Korea Food Res Inst, Food Safety Res Div, Songnam 463746, South Korea
来源：
OPTICS LETTERS | 2011年 / 36卷 / 16期
基金：
新加坡国家研究基金会;
关键词：
SPECTROMETER; PHOTOMIXERS; GENERATION; ANTENNAS; LASER; HEAD;
D O I：
10.1364/OL.36.003094
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The successful demonstration of an optical fiber-coupled terahertz time-domain spectroscopy (THz-TDS) system is described in this study. The terahertz output power of the emitter with two optical band rejection filters was 132 nW, which is an improvement of 70% over the output power without any filters. This improvement is due to the suppression of an optical modulated signal that is reverse-generated when an alternating current bias exceeding a certain threshold is applied to the emitter. Under the optimal alignment conditions, the terahertz detector in a fiber-coupled THz-TDS system clearly measured water vapor dips in the free space. (C) 2011 Optical Society of America
引用
收藏
页码：3094 / 3096
页数：3
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