arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.06210physics.optics
收藏

利用时空耦合控制真空中超短光脉冲的速度

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Antonin Sainte-Marie, Olivier Gobert, Fabien Quere

摘要:

由于其宽的光谱宽度,超短激光器提供了新的可能性来塑造光束并控制其特性,特别是通过使用时空耦合。在这方面,我们提出了一个理论研究的线性传输的超短激光束,结合时间啁啾和标准的像差称为纵向色差。当这样的光束在真空中或线性介质中聚焦时,这两种效应的相互作用可以被利用来将所得强度峰值的速度设置为瑞利长度内的任意值,即精确地在通常使用激光脉冲的地方。这种光束可以在控制激光与物质的相互作用方面找到突破性的应用,特别是在激光驱动的粒子加速方面。

英文摘要:

Due to their broad spectral width, ultrashort lasers provide new possibilities to shape light beams and control their properties, in particular through the use of spatio-temporal couplings. In this context, we present a theoretical investigation of the linear propagation of ultrashort laser beams that combine temporal chirp and a standard aberration known as longitudinal chromatism. When such beams are focused in a vacuum, or in a linear medium, the interplay of these two effects can be exploited to set the velocity of the resulting intensity peak to arbitrary values within the Rayleigh length, i.e. precisely where laser pulses are generally used. Such beams could find groundbreaking applications in the control of laser-matter interactions, in particular for laser-driven particle acceleration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑