High-Repetition-Rate Terahertz Generation in QPM GaAs With a Compact Efficient 2-μm KTP OPO

被引：15

作者：

Mei, Jialin ^{[1
]}

Zhong, Kai ^{[1
]}

Wang, Maorong ^{[1
]}

Liu, Pengxiang ^{[1
]}

Xu, Degang ^{[1
]}

Wang, Yuye ^{[1
]}

Shi, Wei ^{[1
]}

Yao, Jianquan ^{[1
]}

Norwood, Robert A. ^{[2
]}

Peyghambarian, Nasser ^{[2
]}

机构：

[1] Tianjin Univ, Key Lab Optoelect Informat Technol, Coll Precis Instruments & Optoelect Engn, Minist Educ,Inst Laser & Optoelect, Tianjin 300072, Peoples R China

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

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2016年 / 28卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Terahertz (THz); difference frequency generation (DFG); optical parametric oscillator (OPO); gallium arsenide (GaAs); quasi-phase-matching (QPM); OPTICAL PARAMETRIC OSCILLATOR; DIFFERENCE-FREQUENCY-GENERATION; 2; MU-M; WAVE GENERATION; RADIATION; CRYSTAL;

D O I：

10.1109/LPT.2016.2557583

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An efficient tunable high-repetition-rate KTiOPO4 (KTP) optical parametric oscillator (OPO) was deployed as a compact terahertz (THz) source for the first time. The KTP OPO was intracavity pumped by an acousto-optical Q-switched Nd:YVO4 laser and emitted two tunable wavelengths near degeneracy. The OPO tuning range extended continuously from 2.068 to 2.191 mu m with a maximum output power of 3.29 W at 24 kHz, corresponding to an optical-optical conversion efficiency of 20.69%, believed to be among the highest reported. A periodically inverted quasi-phase-matched GaAs crystal was used to generate the THz wave by the difference frequency generation (DFG) method based on a dual-wavelength laser. The maximum output THz power was 0.6 mu W at 1.244 THz, and the DFG energy conversion efficiency was 4.32x10(-7). This provides a potential practical palm-top tunable THz sources for portable applications.

引用

页码：1501 / 1504

页数：4

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