强激光超高斯光束形成的自聚焦环的分裂与抑制

In this work, the self-focusing ring originated from a rotation symmetric super-Gaussian beam (RSSGB) incident on the Nd:glass medium is described in detail, with the aid of the numerical solution to the nonlinear paraxial wave equation. For a RSSGB with initial undulations, the self-focusing ring may split after traveling certain distance inside the nonlinear medium, resulting in some high intensity filaments near the verge of the beam. For a RSSGB with a certain peak power, one can select the width and rank of the beam to suppress the formation of the self-focusing ring, so that the filaments due to the breakup of self-focusing rings may be eliminated finally.

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唐永林, 张小民, 景峰, 陈建国, 李大义. 强激光超高斯光束形成的自聚焦环的分裂与抑制[J]. 光学学报, 2001, 21(4): 390. 唐永林, 张小民, 景峰, 陈建国, 李大义. Breakup and Suppression of Self-Focusing Rings Originated From high Intensity Super-Gaussian Beams[J]. Acta Optica Sinica, 2001, 21(4): 390.

强激光超高斯光束形成的自聚焦环的分裂与抑制

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