Multiple foci and a long filament observed with focused femtosecond pulse propagation in fused silica

被引：81
|
作者：
Wu, ZX
Jiang, HB [1 ]
Luo, L
Guo, HC
Yang, H
Gong, QH
机构：
[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China
[2] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
来源：
OPTICS LETTERS | 2002年 / 27卷 / 06期
关键词：
D O I：
10.1364/OL.27.000448
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Multiple foci and a long filament are observed when we focus a femtosecond laser pulse into a fused-silica sample. The dependences of the intensity distribution of the plasma luminescence on the pulse energy and the numerical aperture (NA) of the focusing objective are investigated. Multiple foci are observed when NA of less than or equal to0.65. A long filament tail is formed instead of multiple foci when the NA is 0.85. A physical image of femtoseond pulse propagation is given by a model based on the nonlinear Schrodinger equation. (C) 2002 Optical Society of America.
引用
收藏
页码：448 / 450
页数：3
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