【作者】 冯国英； 杨李茗； 陈建国； 张小民；

【Author】 Feng Guoying 1. Yang Liming2. Chen Jianguo 1. Zhang Xiaomin2. (1.Department of Opto-electronics, Sichuan University, Chengdu 610064, China) (2Research Center of Laser Fusion, CAEP, Mianyang 621900, China)

【机构】 四川大学电子信息学院； 中国工程物理研究院激光聚变研究中心；

【摘要】 采用空间频谱分析法探讨了在非线性介质中传输的受调制的高功率激光束形成高亮度细丝的可能性。研究表明,在传输过程中伴随着输入场中调制场的高次谐波项的产生和发展,逐渐形成了具有细丝结构的高亮度光场横向分布,细丝的高亮度区可以追踪到入射场(本底加调制场)的“明亮”部分。更多还原

【Abstract】 Clues for the formation of filaments, when a perturbed high intensity laser beam travels inside the nonlinear Kerr medium, has been suggested by using the spatial spectral analysis method. Studies suggest that, following the creation and development of spatial harmonics of the incident modulation arising from the interactions between the back ground and the modulation fields, filaments with high intensity should be observable along the nonlinear medium, and the peaks appear at locations which can be traced back to the modulation spikes in the incident field.更多还原