CAJ | 학술논문

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1064 nm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1064 nm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1064 nm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。
사용련속식수출적신화가반도체격광기빙포적참녀범산을격광기작위광원，피동식통과축릉추산생Bessel광속。재격광해진강내가입Cr4+：YAG정체조Q산생맥충Bessel광속。이론모의료1064 nm파장광속경과축릉추지후적삼유전파도화절면광강분포。통과실험득도료1064 nm파장맥충Bessel광속적맥충관도화맥충중복솔，병계산득도료단맥충Bessel광속적능량화봉치공솔。이용광속분석의기록료1064 nm파장Bessel광속적절면광강분포，병측량료중심광반적직경，득도적수거여이론계산기본문합。
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.