Frequency tuning enhancement of few-cycle femtosecond laser pulses by double-pump-induced N2 index modulation

被引：5

作者：

Wang, Fei ^{[1
,2
]}

Jiang, Hongbing ^{[1
,2
]}

Gong, Qihuang ^{[1
,2
]}

机构：

[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2012年 / 29卷 / 02期

基金：

美国国家科学基金会;

关键词：

GENERATION; INTENSITY;

D O I：

10.1364/JOSAB.29.000232

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Considering field-free molecular alignment enhancement by multiple pulses in the hollow fiber, we theoretically analyze how long-distance propagation influences the final alignment degree. Based on this, we propose a way to enhance frequency tuning of few-cycle femtosecond laser pulse by multi-pump-induced N-2 index modulation. It is found that two pumps are optimized with parameters of 100 fs and 3 x 10(13) Wcm(-2). The tuning range of the initial 5 fs 800 nm probe pulse by double aligning pumps is about twice that by a single pump. (C) 2012 Optical Society of America

引用

页码：232 / 237

页数：6

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