Effect of thermal blooming on the beam quality of truncated laser beams

In this paper, it is found that the behavior of the effect of thermal blooming on the beam quality of truncated laser beams is quite different from that of untruncated ones. The beam spreading of truncated laser beams is less affected by thermal blooming than that of untruncated ones. There exists the oscillatory behavior of beam width versus the truncated parameter due to thermal blooming. When there exists the cross wind, under steady-state thermal blooming, the astigmatism of truncated laser beams is better than that of untruncated ones, and the centriod position is furthest away from the propagation axis for a certain value of the truncated parameter.