Potassium titanyl arsenate based cascaded optical parametric oscillator emit at 2.5 μm derived by neodymium-doped yttrium lithium fluoride laser

作者：Duan, Yanmin; Zhang, Jing; Guo, Junhong; Zhu, Haiyong^*; Zhang, Yongchang; Xu, Changwen^*; Wang, Hongyan; Zhang, Yaoju

来源：Japanese Journal of Applied Physics, 2018, 57(4): 040304.

DOI：10.7567/JJAP.57.040304

• RAMAN LASER
• KTA-OPO
• KTIOASO4
• ND
• GENERATION
• OUTPUT

We reported a potassium titanyl arsenate (KTA) based cascaded optical parametric oscillator (OPO). The secondary OPO signal light at 2.5 mu m was obtained with two OPO processes in one non-critical phase matching cut KTA crystal. This cascaded OPO was driven by a Q-switched neodymium-doped yttrium lithium fluoride (Nd:YLF) laser at 1047 nm. Making full use of the negative thermal lens effect and long upper level fluorescence lifetime of Nd:YLF, signal power of 605 mW at 2503 nm was achieved with a pulse repetition frequency of 15 kHz and an incident diode pump power of 9.7 W. Therefore, the cascaded OPO derived by Q-switched Nd: YLF laser could provide high peak power pulsed laser emission in mid-infrared band.

• 出版日期2018-4
• 单位深圳大学; 温州大学