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光束半径测量方法对拉盖尔-高斯光束束宽及M~2因子的影响
Effect of measurement methods on beamwidths and M~2 factors of Laguerre - Gaussian modes
【摘要】 根据二阶矩法、刀口扫描法、可变光阑法对光束束宽的定义,计算了二阶矩法中所有M~2≤8的拉盖尔-高斯光束的半径及相应的M~2因子的值,对所得结果进行了讨论。
【Abstract】 According to the methods proposed by ISO the beamwidth of a laser beam can be calculated using the diameter that passes 86.5% of the total energy of the beam, the knife edge and the second moment methods of beamwidth measurement. For all Laguerre - Gaussian modes whose M~2 calculated with the second moment method were less then or equal to 8, the beamwidths and beam quality factors were calculated and the results were discussed.
【关键词】 束宽;
光束质量因子;
拉盖尔-高斯光束;
【Key words】 beamwidth; factor of laser beam quality; Laguerre - Gaussian beam;
【Key words】 beamwidth; factor of laser beam quality; Laguerre - Gaussian beam;
- 【文献出处】 应用激光 ,APPLIED LASER , 编辑部邮箱 ,1999年05期
- 【分类号】TN247
- 【被引频次】2
- 【下载频次】209