Infrared and Laser Engineering, Volume. 51, Issue 9, 20210817(2022)
Research on mid-infrared laser at 35 kHz based on optical parametric oscillator
A 3.8 μm periodically poled LiNbO3 optical parametric oscillator based on high repetition frequency pumping is studied. The Nd:YVO4 acousto-optic Q-switched laser is used, obtaining a fundamental 1064 nm laser with good beam quality, the repetition frequency at 25-35 kHz, the maximum average power of 6.1 W and the pulse width of 59.1 ns. The temperature tuning characteristic of MgO:PPLN crystal with the period Λ=29.5 μm under the 1064 nm laser pumping is simulated. Through experiments, the 3599.6-3845.5 nmmid-infrared laser is obtained at a temperature of 25-200 ℃. When the temperature of the PPLN crystal is 30 ℃and the pump power is 6.1 W, the mid-infrared laser is obtained with the maximum output power of 0.45 W and the repetition frequency of 35 kHz at 3845.5 nm.
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Xingchen Jiang, Dehua Cheng, Yeqiu Li, Jianfeng Cui, Qin Dai. Research on mid-infrared laser at 35 kHz based on optical parametric oscillator[J]. Infrared and Laser Engineering, 2022, 51(9): 20210817
Category: Lasers & Laser optics
Received: Nov. 3, 2021
Accepted: Dec. 6, 2021
Published Online: Jan. 6, 2023
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