TY - JOUR
T1 - High-Repetition-Rate Terahertz Generation in QPM GaAs With a Compact Efficient 2-μm KTP OPO
AU - Mei, Jialin
AU - Zhong, Kai
AU - Wang, Maorong
AU - Liu, Pengxiang
AU - Xu, Degang
AU - Wang, Yuye
AU - Shi, Wei
AU - Yao, Jianquan
AU - Norwood, Robert A.
AU - Peyghambarian, Nasser
N1 - Funding Information:
This work was supported in part by the Tianjin Municipal Primary Application and Frontier Technology Research Plan under Grant 13JCQNJC01500 and Grant 14JCQNJC02200, in part by the Science and Technology Support Program of Tianjin under Grant 14ZCZDGX00030, in part by the Specialized Research Fund for the Doctoral Program of High Education under Grant 20120032110053, in part by the National Basic Research Program of China under Grant 2014CB339802 and Grant 2015CB755403, and in part by the National Natural Science Foundation of China under Grant 61271066 and Grant 61275102.
Publisher Copyright:
© 2016 IEEE.
PY - 2016/7/15
Y1 - 2016/7/15
N2 - 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 μm 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 μW at 1.244 THz, and the DFG energy conversion efficiency was 4.32 × 10-7. This provides a potential practical palm-top tunable THz sources for portable applications.
AB - 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 μm 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 μW at 1.244 THz, and the DFG energy conversion efficiency was 4.32 × 10-7. This provides a potential practical palm-top tunable THz sources for portable applications.
KW - difference frequency generation (DFG)
KW - gallium arsenide (GaAs)
KW - gallium arsenide (GaAs)
KW - optical parametric oscillator (OPO)
KW - quasi-phase-matching (QPM)
KW - terahertz (THz)
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U2 - 10.1109/LPT.2016.2557583
DO - 10.1109/LPT.2016.2557583
M3 - Article
AN - SCOPUS:84971668255
VL - 28
SP - 1501
EP - 1504
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
SN - 1041-1135
IS - 14
M1 - 7457629
ER -