强激光圆对称超高斯光束的自聚焦环
Self-focusing ring of circle symmetric super-Gaussian beam
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摘要: 通过数值求解非线性薛定谔方程，详细描述了圆对称超高斯光束在Nd:glass介质中传输形成的自聚焦环。初始光束受到扰动后，环就会分裂形成强烈的细光束，显示出自聚焦环的不稳定性，细光束具有很大的峰值光强，将对介质造成极大的危害。Abstract: Self-focusing rings of circle symmetric super-Gaussian laser beam (CSSGLB) with high intensity travelling in Nd:glass medium, are described in detail with numerically solution to the nonlinear Schdinger equation. When a CSSGLB with initial perturbations travelling in this medium, the self-focusing rings are to be broken up and form high intense filaments. This phenomenon showed the instability of the self-focusing rings .The high intensity filaments may destroy the medium．
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Key words:
- non-linear sch?dinger equation /
- self-focusing ring /
- super-gaussian beam
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