光束质量测量的最小束斑法
MINIMUM SPOT METHOD FOR LASER BEAM QUALITY MEASUREMENT
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Abstract: Based on minimum spot condition, a method for laser beam quality measurement is proposed. From beam diameter measurements at two locations along laser beam propagation axis, location of beam waist, waist width, far-field divergence angle and M2 factor can be given.
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Key words:
- beam quality /
- M2 factor
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