He Ping, Xu Min. Two New Calculating Methods for M2-factor of Laser Beam[J]. Journal of Beijing University of Technology, 1999, 25(4): 1-5.
    Citation: He Ping, Xu Min. Two New Calculating Methods for M2-factor of Laser Beam[J]. Journal of Beijing University of Technology, 1999, 25(4): 1-5.

    Two New Calculating Methods for M2-factor of Laser Beam

    • The calculation and measurement of laser beam M2-factor was discussed, then two new methods was proposed. One of them is to obtain M2-factor from the spot size of many cross sections; the other is from the intensity profile of one section.
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