微型化LD泵浦Er^(3+),Yb^(3+)共掺磷酸盐玻璃被动调Q激光器

Miniature LD pumped passively Q-switched Er^(3+),Yb^(3+) co-doped phosphate glass laser

报道了一种主要应用于激光测距的微型化激光二极管泵浦Er3+/Yb3+共掺磷酸盐玻璃被动调Q激光器。采用中心波长940nm的二极管作为泵浦源,Er3+/Yb3+共掺磷酸盐玻璃作为增益介质,Co2+:MgAl2O4作为被动调Q晶体,通过优化增益介质和被动调Q晶体参数,获得了最佳的增益介质长度和被动调Q晶体初始透过率。当泵浦能量14mJ,重复频率10Hz,泵浦脉宽5ms时,获得了单脉冲能量480μJ,脉宽5ns,峰值功率大于20kW的激光输出,激光光束质量因子为1.2。

A miniature diode pumped passively Q-switched Er3+and Yb3+co-doped phosphate glass laser is reported.The center wavelength of pump source is 940 nm.A Co2+:MgAl2O4crystal is used as a saturable absorber.When the pump energy is14 mJ,stable Q-switched pulses are obtained at repetition frequency of 10 Hz and pump pulse width of 5ms.The output pulse energy of laser is 480μJ and pulse width is 5ns.The wavelength of laser is 1535 nm.The peak power is higher than 20 kW and beam quality is 1.2.