Widely-tunable high-repetition-rate terahertz generation in GaSe with a compact dual-wavelength KTP OPO around 2 μm

被引：39

作者：

Mei, Jialin ^{[1
,2
]}

Zhong, Kai ^{[1
,2
]}

Wang, Maorong ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

Xu, Degang ^{[1
,2
]}

Shi, Wei ^{[1
,2
]}

Wang, Yuye ^{[1
,2
]}

Yao, Jianquan ^{[1
,2
]}

Norwood, Robert A. ^{[3
]}

Peyghambarian, Nasser ^{[3
]}

机构：

[1] Tianjin Univ, Inst Laser & Optoelect, Coll Precis Instrument & Optoelect Engn, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Key Lab Optoelect Informat Technol, Minist Educ, Tianjin 300072, Peoples R China

[3] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA

来源：

OPTICS EXPRESS | 2016年 / 24卷 / 20期

基金：

中国国家自然科学基金;

关键词：

DIFFERENCE-FREQUENCY-GENERATION; WAVE GENERATION; CRYSTAL; RADIATION;

D O I：

10.1364/OE.24.023368

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A compact efficient high-repetition-rate doubly-resonant dual-wavelength KTP optical parametric oscillator (OPO), with output power up to 3.65 W and tuning ranges of 2.088-2.133 mu m/2.171-2.122 mu m for signal/idler waves, was deployed for terahertz (THz) generation in a GaSe crystal. Based on difference frequency generation (DFG), the THz wave was continuously tunable from 730.9 mu m (0.41 THz) to 80.8 mu m (3.71 THz), believed to be the first report of a compact high-repetition-rate widely-tunable THz source. The maximum THz average power reached 1.2 mu W at 1.54 THz and the corresponding DFG efficiency was 7.8 x 10(-7), entirely suitable for portable applications. The utility of the THz source was also demonstrated through spectroscopy and imaging experiments. (C) 2016 Optical Society of America

引用

页码：23368 / 23375

页数：8

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