光学学报, 2011, 31 (7): 0719002, 网络出版: 2011-06-24
基于双光子荧光原理的空气中飞秒激光成丝区域脉冲特性的测量
Application of Two-Photon Fluorescence Measurement on Pulse Characterization during Femtosecond Laser Filamentation in Air
激光光学 超快光学 成丝 双光子荧光 超快测量 laser optics ultrafast optics filamentation two-photon fluorescence ultrafast measurements
摘要
基于双光子荧光法测量原理,实验研究空气中飞秒激光成丝区域内飞秒脉冲的时域特性。实验结果证明,该测量技术可以同时对成丝区域内飞秒脉冲的宽度、啁啾率以及光束半径进行测量,在空气中飞秒激光成丝的动态过程的研究中具有应用价值。
Abstract
This work proposes a diagnostic method, which is based on two-photon fluorescence measurement, to study the temporal characteristic of a laser pulse undergoing filamentation in air. The results show that the pulse duration, chirp rate and beam radius could be retrieved simultaneously. This simple technique is useful in practice to trace the underlying dynamics of filamentation in air.
刘岩, 徐圣奇, 刘伟伟. 基于双光子荧光原理的空气中飞秒激光成丝区域脉冲特性的测量[J]. 光学学报, 2011, 31(7): 0719002. Liu Yan, Xu Shengqi, Liu Weiwei. Application of Two-Photon Fluorescence Measurement on Pulse Characterization during Femtosecond Laser Filamentation in Air[J]. Acta Optica Sinica, 2011, 31(7): 0719002.