3D Raman bullet formed under filamentation of femtosecond laser pulses in air and nitrogen

被引：19
|
作者：
Uryupina, Daria [1 ,2 ]
Panov, Nikolay [1 ,2 ]
Kurilova, Maria [1 ,2 ]
Mazhorova, Anna [1 ,2 ]
Volkov, Roman [1 ,2 ]
Gorgutsa, Stepan [1 ,2 ]
Kosareva, Olga [1 ,2 ]
Savel'ev, Andrei [1 ,2 ]
机构：
[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 11991, Russia
[2] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 11991, Russia
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2013年 / 110卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
HIGH-INTENSITY; POLARIZATION RESPONSE; TRANSPARENT MEDIA; LIGHT FILAMENTS; OPTICAL PULSES; ORDER KERR; ATOMIC GAS; GENERATION; INTERFEROMETRY; PROPAGATION;
D O I：
10.1007/s00340-012-5261-9
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Complex experimental study of spectral, spatial and temporal behaviors of the IR shifted component observed under filamentation of the collimated femtosecond laser beam (80 GW, 50 fs, 805 nm) in molecular gases showed that this component behaves like a Raman soliton. Namely, it is confined in all domains: (a) it propagates within the filament core, (b) it has a stable duration of 30 fs along the filament, and (c) its spectrum shifts as a whole from 820 to 870 nm on the distance of 2 m from the filament start. A simple model explaining the origin of anomalous group velocity dispersion in the plasma channel of a filament is suggested.
引用
收藏
页码：123 / 130
页数：8
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