DYNAMICS OF IONIZATION-ENHANCED SPECTRAL EXPANSION IN WATER INDUCED BY AN INTENSE FEMTOSECOND LASER BEAM

• 来源期刊: 中国物理(英文版)
• 学科: 物理学
• 关键词: supercontinuum ionization ultrafast
• 年，卷（期）: 2001,（8）
• 页码范围: 735-738
• 页数: 4页
• 分类号: O4
• 语种: 英文

摘要

The dynamic process of white-continuum generation in water was investigated by the pump-probe technique with a femtosecond intense laser at 805nm. The spectrum width of the probe beam was broadened at the blue side and varied with different delay times. This blueshift was attributed to the ionization-enhanced optical nonlinearity, in which both the multi-photon ionization and avalanche ionization had an effect.