Interference technique for laser wavefront measurement

Zhigang Fan; Aihong Zhang; Zhiqiang Wang

doi:10.1117/12.482862

12 September 2002 Interference technique for laser wavefront measurement

Zhigang Fan, Aihong Zhang, Zhiqiang Wang

Proceedings Volume 4915, Lasers in Material Processing and Manufacturing; (2002) https://doi.org/10.1117/12.482862
Event: Photonics Asia, 2002, Shanghai, China

Abstract

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.

Citation Download Citation

Zhigang Fan, Aihong Zhang, and Zhiqiang Wang "Interference technique for laser wavefront measurement", Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); https://doi.org/10.1117/12.482862

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