全固态调Q激光器产生脉冲Bessel光束  

Solid-state Q-switch laser generating pulsed Bessel beam

作　　者：王涛[1] 杜团结[1] 庄凤江[1] 吴逢铁[1] 

机构地区：[1]华侨大学信息科学与工程学院福建省光传输与变换重点实验室,福建厦门361021

出　　处：《红外与激光工程》2014年第11期3505-3509,共5页Infrared and Laser Engineering

基　　金：国家自然科学基金(61178015);福建省自然科学基金(2012J01278)

摘　　要：使用连续式输出的砷化镓半导体激光器泵浦的掺钕钒酸钇激光器作为光源,被动式通过轴棱锥产生Bessel光束。在激光谐振腔内加入Cr4+:YAG晶体调Q产生脉冲Bessel光束。理论模拟了1064nm波长光束经过轴棱锥之后的三维传播图和截面光强分布。通过实验得到了1064nm波长脉冲Bessel光束的脉冲宽度和脉冲重复率,并计算得到了单脉冲Bessel光束的能量和峰值功率。利用光束分析仪记录了1064nm波长Bessel光束的截面光强分布,并测量了中心光斑的直径,得到的数据与理论计算基本吻合。The laser diode pumped Nd：YVO4 laser was used as light source, Bessel beam was generated by passively passing through axicon. The pulsed Bessel beam was generated by putting the Cr4＋：YAG in the laser resonator. The propagation and cross- section distribution of 1 064 nm Bessel beam were simulated. In experiment, the pulse width and pulse repetition rate of 1 064 nm pulse Bessel beam were obtained, the energy and the peak power of pulsed Bessel beam were calculated. The cross- section intensity distribution of Bessel beam was recorded by the laser beam analysis and the diameter of centre spot was measured. The experimental results agrees well with the simulation.

关 键 词：脉冲Bessel光束 半导体激光器 轴棱锥 调Q 

分 类 号：O436.1[机械工程—光学工程]