中国激光, 2019, 46 (9): 0901005, 网络出版: 2019-09-10
脉宽依赖的飞秒激光成丝钳制光强的研究 下载: 1196次
Pulse-Duration-Dependent Clamping Intensity in Femtosecond Laser Filament
激光器 飞秒现象 飞秒激光成丝 钳制光强 啁啾 lasers femtosecond phenomena femtosecond laser filament clamping intensity chirping
摘要
研究了飞秒激光成丝过程中钳制光强对脉宽的依赖关系。对不同脉宽成丝钳制光强进行直接实验测量,发现当脉宽逐渐展宽(由45 fs展宽至177 fs)时,对应的钳制光强逐渐减小。实验结论与通过求解非线性薛定谔方程得到的数值模拟结果一致。依赖于脉宽的钳制光强的分析结果可为深入理解与脉宽相关的光丝应用提供科学依据和新思路。
Abstract
Herein, the pulse-duration-dependent clamping intensity in a femtosecond laser filament is systematically investigated. The clamping intensity in the laser filament is directly measured. Results show that the clamping intensity gradually decreases as the pulse duration stretches from 45 fs to 177 fs. The experimental results are in a good agreement with the simulation results obtained by solving the nonlinear Schr?dinger equation. The analysis of pulse-duration-dependent clamping intensity in the laser filament provides scientific basis and new ideas for fully understanding intensity related filament applications.
张旋, 王铁军, 郭豪, 孙海轶, 李儒新. 脉宽依赖的飞秒激光成丝钳制光强的研究[J]. 中国激光, 2019, 46(9): 0901005. Zhang Xuan, Wang Tiejun, Guo Hao, Sun Haiyi, Li Ruxin. Pulse-Duration-Dependent Clamping Intensity in Femtosecond Laser Filament[J]. Chinese Journal of Lasers, 2019, 46(9): 0901005.