Controllable supercontinuum generation by the quantum wake of molecular alignment

被引：42

作者：

Wu, Jian ^{[1
]}

Cai, Hua ^{[1
]}

Peng, Yan ^{[1
]}

Zeng, Heping ^{[1
]}

机构：

[1] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

来源：

PHYSICAL REVIEW A | 2009年 / 79卷 / 04期

关键词：

carbon compounds; high-speed optical techniques; molecule-photon collisions; self-phase modulation; ultraviolet spectra; FEMTOSECOND LASER-PULSE; OPTICAL MEDIA; FILAMENTATION; PROPAGATION; COMPRESSION; EMISSION; N-2;

D O I：

10.1103/PhysRevA.79.041404

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the generation of supercontinuum with controllable cutoff extension in ultraviolet spectral region through femtosecond filamentation in parallel aligned CO2 molecules. The additional cross-focusing effect from the quantum wake of impulsive molecular alignment and the subsequently enhanced self-phase-modulation as well as self-steepening and space-time focusing play important roles for the observed supercontinuum generation, which also result in a self-cleaned beam profile by attracting almost all the energy into a single core.

引用

页数：4

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