A compact and efficient 4.25 BaGa4Se7 optical parametric oscillator

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2019,（12）
• 页码范围: 49-52
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201917.121402

摘要

We report an efficient mid-infrared extracavity optical parametric oscillator (OPO) based on the nonlinear crystal BaGa4Se7 pumped by a diode-side-pumped Q-switched Nd:Y3A15O12 (Nd:YAG) laser.The maximum pulse energy of 1.03 mJ at 4.25 μm is obtained with the repetition rate of 10 Hz and pulse width of 12.6 ns when the pump energy was 13.5 m J,corresponding to an optical-to-optical conversion efficiency of 7.6％ from 1.064 μm to 4.25 μm.The idler wave slope conversion efficiency was 12％.To the best of our knowledge,it is the highest reported conversion efficiency for the compact BaGa4Se7OPO driven by the Nd:YAG laser.