基于掺氧化镁周期极化铌酸锂的毫焦级皮秒中红外光参量放大器。
Millijoule-level picosecond mid-infrared optical parametric amplifier based on MgO-doped periodically poled lithium niobate.
作者信息
Xu Hongyan, Yang Feng, Chen Ying, Liu Ke, Du Shifeng, Zong Nan, Yang Jing, Bo Yong, Peng Qinjun, Zhang Jingyuan, Cui Dafu, Xu Zuyan
出版信息
Appl Opt. 2015 Mar 20;54(9):2489-94. doi: 10.1364/AO.54.002489.
A millijoule-level high pulse energy picosecond (ps) mid-infrared (MIR) optical parametric amplifier (OPA) at 3.9 μm based on large-aperture MgO-doped periodically poled lithium niobate (MgO:PPLN) crystal was demonstrated for the first time, to the best of our knowledge. The MIR OPA was pumped by a 30 ps 1064 nm Nd:YAG laser at 10 Hz and injected by an energy-adjustable near-infrared seed based on a barium boron oxide (BBO) optical parametric generator/optical parametric amplifier (OPG/OPA) with double-pass geometry. Output energy of 1.14 mJ at 3.9 μm has been obtained at pump energy of 15.2 mJ. Furthermore, the performance of MIR OPG in MgO:PPLN was also investigated for comparing with the seeded OPA.
据我们所知，首次展示了基于大孔径掺氧化镁周期极化铌酸锂（MgO:PPLN）晶体的波长为3.9μm、毫焦耳级高脉冲能量皮秒（ps）中红外（MIR）光参量放大器（OPA）。该中红外OPA由一台重复频率为10Hz、脉宽为30ps的1064nm Nd:YAG激光器泵浦，并由一台基于具有双程结构的硼酸钡（BBO）光参量发生器/光参量放大器（OPG/OPA）的能量可调近红外种子光注入。在泵浦能量为15.2mJ时，获得了波长为3.9μm、输出能量为1.14mJ的结果。此外，还研究了MgO:PPLN中红外OPG的性能，以便与种子注入OPA进行比较。
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