Chen Yujin, Lin Yanfu, Huang Jianhua, Gong Xinghong, Luo Zundu, Huang Yidong
Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
Opt Express. 2013 Aug 12;21(16):18919-26. doi: 10.1364/OE.21.018919.
1520 and 1560 nm acousto-optic Q-switched pulse lasers with high peak power and narrow width were respectively realized in Er:Yb:RAl(3)(BO(3))(4) (R = Y and Lu) crystals end-pumped by a 970 nm diode laser. For Er:Yb:LuAl(3)(BO(3))(4) crystal, 1520 nm laser with 350 μJ energy, 32 ns width and 10.9 kW peak power, and 1560 nm laser with 520 μJ energy, 67 ns width and 7.8 kW peak power were respectively obtained at pulse repetition frequency of 1 kHz. For Er:Yb:YAl(3)(BO(3))(4) crystal, 1520 nm laser with 210 μJ energy, 45 ns width and 4.7 kW peak power, and 1560 nm laser with 380 μJ energy, 102 ns width and 3.7 kW peak power were respectively obtained at pulse repetition frequency of 1 kHz. Pulse performances of 1520 and 1560 nm lasers were compared and the narrower pulse width of 1520 nm laser was ascribed to the higher stimulated emission cross-section.
通过970nm二极管激光器端面泵浦，在Er:Yb:RAl₃(BO₃)₄（R = Y和Lu）晶体中分别实现了具有高峰值功率和窄脉宽的1520nm和1560nm声光调Q脉冲激光器。对于Er:Yb:LuAl₃(BO₃)₄晶体，在1kHz的脉冲重复频率下，分别获得了能量为350μJ、脉宽为32ns、峰值功率为10.9kW的1520nm激光，以及能量为520μJ、脉宽为67ns、峰值功率为7.8kW的1560nm激光。对于Er:Yb:YAl₃(BO₃)₄晶体，在1kHz的脉冲重复频率下，分别获得了能量为210μJ、脉宽为45ns、峰值功率为4.7kW的1520nm激光，以及能量为380μJ、脉宽为102ns、峰值功率为3.7kW的1560nm激光。比较了1520nm和1560nm激光器的脉冲性能，1520nm激光较窄的脉宽归因于较高的受激发射截面。
