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

Jialin Mei; Kai Zhong; Maorong Wang; Pengxiang Liu; Degang Xu; Yuye Wang; Wei Shi; Jianquan Yao; Robert A Norwood; Nasser N Peyghambarian

doi:10.1109/LPT.2016.2557583

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

Jialin Mei, Kai Zhong, Maorong Wang, Pengxiang Liu, Degang Xu, Yuye Wang, Wei Shi, Jianquan Yao, Robert A Norwood, Nasser N Peyghambarian

Optical Sciences, College of

Research output: Contribution to journal › Article

11 Scopus citations

Abstract

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.

Original language	English (US)
Article number	7457629
Pages (from-to)	1501-1504
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	28
Issue number	14
DOIs	https://doi.org/10.1109/LPT.2016.2557583
Publication status	Published - Jul 15 2016

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Keywords

difference frequency generation (DFG)
gallium arsenide (GaAs)
gallium arsenide (GaAs)
optical parametric oscillator (OPO)
quasi-phase-matching (QPM)
terahertz (THz)

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials

Cite this

Mei, J., Zhong, K., Wang, M., Liu, P., Xu, D., Wang, Y., ... Peyghambarian, N. N. (2016). High-Repetition-Rate Terahertz Generation in QPM GaAs With a Compact Efficient 2-μm KTP OPO. IEEE Photonics Technology Letters, 28(14), 1501-1504. [7457629]. https://doi.org/10.1109/LPT.2016.2557583

High-Repetition-Rate Terahertz Generation in QPM GaAs With a Compact Efficient 2-μm KTP OPO. / Mei, Jialin; Zhong, Kai; Wang, Maorong; Liu, Pengxiang; Xu, Degang; Wang, Yuye; Shi, Wei; Yao, Jianquan; Norwood, Robert A ; Peyghambarian, Nasser N.

In: IEEE Photonics Technology Letters, Vol. 28, No. 14, 7457629, 15.07.2016, p. 1501-1504.

Research output: Contribution to journal › Article

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abstract = "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.",

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10.1109/LPT.2016.2557583