Angular chirp and tilted light pulses in CPA lasers
Angular chirp and tilted light pulses in CPA lasers
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DOI：
10.1007/s003400050001
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发表时间：
2000-01-01
影响因子：
2.1
通讯作者：
Witte, KJ
中科院分区：
文献类型：
--
作者：
Pretzler, G;Kasper, A;Witte, KJ
本文对超短激光脉冲角啁啾的各个方面进行了分析和实验研究。这种类型的啁啾很容易由标准脉冲拉伸器和/或压缩机设置的轻微错位产生。角啁啾导致倾斜的脉冲前在近场和强烈的减少强度的焦点。这种效果很难用标准的诊断技术观察到。我们提出了一种基于干涉场自相关的方法，使我们能够可靠地测量角啁啾。本文还概述了如何避免这种影响的建议。
We investigate analytically and experimentally various aspects of the angular chirp of ultrashort laser pulses. This type of chirp is easily produced by slight misalignment of standard pulse stretcher and/or compressor setups. Angular chirp leads to tilted pulse fronts in the near field and to a strong reduction of intensity in the focus. The effect is rather difficult to observe with standard diagnostic techniques. We present a method that is based on interferometric field autocorrelation and allows us to measure the angular chirp reliably. Suggestions on how to avoid this effect are outlined as well.