期刊论文

Fu, X. Q.

英文

APPLIED PHYSICS B-LASERS AND OPTICS

0946-2171

2014

114

3

449-454

10.1007/s00340-013-5540-0

We thank Dr. W.-K. Liu for a careful reading of our manuscript. This work was supported in part by the National Nature Science Foundation of China (Grant Nos. 60890202), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20110161110012), the Department of Science and Technology of Hunan Province (2011FJ3121), the Fundamental Research Funds for the Central Universities, Hunan University and SRF for ROCS, SEM, the Department of Science and Technology of Hunan Province (2012FJ3025).

本校为其他机构

Small-scale self-focusing (SF) causes rapid increase in the partial spatial intensity, breaking up the spatial profile of the beam into an intensity increasing zone (IZ) and a non-increasing zone (NIZ). We measure the evolutions of the pulse width at the IZ and NIZ with small-scale SF, and our results show that the pulse width at the IZ becomes narrower with increasing partial spatial intensity. The pulse width at the NIZ is almost unchanged with increasing laser power. We find that our experimental results are...