孔栅分束镜测量强激光远场光束质量的研究
The measurement of hel beam far field with hole grating beam sampler
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摘要: 论述了孔栅镜光束衰减和取样的原理及特点,用此法对高功率连续CO2激光器远场光强分布进行了检测,给出了光强空间分布。算出了光束的焦斑半径、远场发散角,并通过M2参数对光束质量作了评估。Abstract: A high power laser beam profile intensity measuring system using hole grating is introduced.The principle of hole grating sampler was analyzed.The HL CO2 laser focal irradiance distribution was measured with hole grating.The divergence and radius of laser beam were calculated.The beam quality can be valued by M2 factor.
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