Generation of intense frequency-tunable few-cycle femtosecond pulses in hollow fiber

被引：5
|
作者：
Zhong, Fengjiao [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 | 2010年 / 27卷 / 01期
基金：
美国国家科学基金会;
关键词：
MOLECULAR-PHASE MODULATION; WAVE-GUIDES; COMPRESSION; AIR;
D O I：
10.1364/JOSAB.27.000128
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We theoretically show an approach to generate intense frequency-tunable few-cycle femtosecond pulses by molecular phase modulation combined with self-phase modulation. An intense pump pulse propagates through a gas-filled hollow fiber to excite alignment of the gas molecule, which induces temporal modulation of the refractive index. Then the spectrum of a time-delayed intense probe pulse is continuously tuned by the alignment and broadened simultaneously by self-phase modulation. The modification to the pump-induced alignment by the intense probe pulse is considered. Frequency-tunable intense few-cycle pulses in the visible and near-infrared spectrum range are obtained using initial 20 fs, 800 nm pulses. (C) 2009 Optical Society of America
引用
收藏
页码：128 / 131
页数：4
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