12 September 2002 Interference technique for laser wavefront measurement
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The radial sheering interference technique is used to measure the laser wave-front. In the system, the near field and far field wave-front of the laser beam of large caliber are measured respectively. Many evaluation parameters of the laser wave-front can be obtained, such as scattering angle, M2 of the laser beam, peak-to-peak-value (PPV), strehl value et. al. The interferogram is acquired by CCD camera, pretreated by high-capability computer and then used to reconstruct the wave surface. Mathematical principle to reconstruct the wave-front is expatiated in the paper. The interference system can be adjusted easily and operate real-time during the experiment.
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Zhigang Fan, Zhigang Fan, Aihong Zhang, Aihong Zhang, Zhiqiang Wang, Zhiqiang Wang, } "Interference technique for laser wavefront measurement", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482862; https://doi.org/10.1117/12.482862

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