Quantitative deviation of the two-photon .absorption coefficient based on three laser pulse models

• 来源期刊: 中国光学快报(英文版)
• 学科: 物理学
• 关键词: 脉冲模式 吸收系数 相对偏差 双光子 激光 非线性传输 数值分析 脉冲波形
• 年，卷（期）: 2010,（1）
• 所属期刊栏目: Nonlinear Optics
• 页码范围: 93-98
• 页数: 6页
• 分类号: O484.41 TP271
• 语种: 英文

摘要

The pulse profile influence of excitation light on the two-photon absorption coefficientβis theoretically and numerically studied.Based on Gaussian spatial and temporal laser,we obtain an expansion formula of energy transmission.As compared with a plain beam and a pulse beam that is rectangular in time but Gaussian in space,the relative deviations ofβturn out to be about 214%and 47%,respectively.These differences indicate that a smallerβmay be obtained than the real one in usual nonlinear transmission. O...