激光光束传输特性分析─—等效波面曲率半径法

详细信息

Laser beam analysis──the beam effective radius approach

摘要: 本文提出了利用光束等效波面曲率半径,并结合束宽及远场发散角来测量分析激光光束传输特性的方法,能以较高的精度确定激光光束的束腰位置z0,束腰处的束宽D0及激光光束质量传输因子M2.这是一种可用于连续,重复频率脉冲及单脉冲激光光束传输特性的分析测量方法。文中还给出了实现这一方法的具体测量方案。
- 激光光束 /
- 光束传输 /
- 光束分析与测量
Abstract: A laser beam analysis method is proposed by using the beam effective radius R(z)with the measurements of beam width d(z)and beam divergence angle θ.The location of the beam z0 and the times-diffraction-limit-factor M2 can be determined with relative high accuracy. The method is usable for CW Iaser beam,repetition pulsed laser beam and single pulsed laser beam.Two practical apparatus designs are also proposed.
- laser beam /
- beam propagation /
- beam analysis