自聚焦激光束光束质量评价的功率谱密度方法

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自聚焦激光束光束质量评价的功率谱密度方法

物理学报, 2003, 52(1): 87-90.

DOI: 10.7498/aps.52.87

CSTR: 32037.14.aps.52.87

Power spectra density estimation of quality of the laserbeam passing through an selffocusing media

Acta Phys. Sin., 2003, 52(1): 87-90.

DOI: 10.7498/aps.52.87

CSTR: 32037.14.aps.52.87

摘要
把功率谱密度分析的方法引入到激光束光束质量的评价中，分析了自聚焦激光束的近场分布，研究了强激光非线性自聚焦的一般规律，给出了在一定强度调制下的光束经过钕玻璃介质发生自聚焦成丝效应的B积分阈值条件，实验和理论模拟结果基本一致.

关键词:
功率谱密度 /

非线性自聚焦 /

钕玻璃介质
Abstract
The method of Power spectra density was introduced to estimate the quality of a high intensity laser beam, and the near field of the self-focusing laser beam was analyzed. We obtained a certain ΔB restriction of the laser beam.The results of numerical simulations were coincident with the experimental data very well .

Keywords:
Power spectra density /

nonlinear self focusing effect /

Nd3+:glass laser
作者及机构信息
彭志涛,

景峰,

刘兰琴,

朱启华,

陈波,

张昆,

刘华,

张清泉,

程晓峰,

蒋东镔,

刘红婕,

彭翰生
Authors and contacts
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