飞秒激光脉冲在空气中的异常长程传播：移动焦点还是脉冲自导引？

Anomalous long-range propagation of femtosecond laser pulses through air: moving focus or pulse self-guiding?

作者信息

Lange H R, Grillon G, Ripoche J F, Franco M A, Lamouroux B, Prade B S, Mysyrowicz A, Nibbering E T, Chiron A

出版信息

Opt Lett. 1998 Jan 15;23(2):120-2. doi: 10.1364/ol.23.000120.

DOI:10.1364/ol.23.000120

Abstract

Self-guided propagation of femtosecond laser pulses is studied for a converging-beam configuration. Channeling of the pulse energy through various gases is observed over distances well beyond the lens focal point, a fact that cannot be explained by the moving-focus model. The results are in good agreement with three-dimensional numerical simulations.

摘要

研究了飞秒激光脉冲在会聚光束配置下的自引导传播。观察到脉冲能量在各种气体中的通道化现象，其传播距离远超过透镜焦点，这一事实无法用移动焦点模型来解释。结果与三维数值模拟结果吻合良好。