扩展腔被动锁模钛宝石振荡器中的自调制——倍周期和混沌现象。

Automodulations in an extended cavity, passively modelocked Ti:Sapphire oscillator--period doubling and chaos.

作者信息

Kardaś Tomasz M, Gadomski Wojciech, Ratajska-Gadomska Bozena, Wasylczyk Piotr

机构信息

Department of Chemistry, University of Warsaw, Warsaw, Poland.

出版信息

Opt Express. 2010 Dec 20;18(26):26989-94. doi: 10.1364/OE.18.026989.

DOI:10.1364/OE.18.026989

PMID:21196975

Abstract

An extended cavity Ti:Sapphire oscillator exhibits stable operation for positively chirped pulses, while in the negative chirp regime multiple pulses are present in the cavity. At the border of these regimes automodulations, being an effect of the interplay between population inversion, laser medium polarization and the laser pulse field, appear. Two particular instabilities: period doubling and chaotic behavior of the pulse train envelope are observed. Complex temporal evolution of the pulse spectrum within the modulation period is investigated.

摘要

一个扩展腔钛宝石振荡器对于正啁啾脉冲表现出稳定运行，而在负啁啾状态下腔内会出现多个脉冲。在这些状态的边界处，自调制现象出现了，它是粒子数反转、激光介质极化和激光脉冲场之间相互作用的结果。观察到了两种特殊的不稳定性：脉冲序列包络的倍周期和混沌行为。研究了调制周期内脉冲光谱的复杂时间演化。