Range of multiple filamentation of a terawatt-power large-aperture KrF laser beam in atmospheric air

被引：4

作者：

Zvorykin, Vladimir ^{[1
]}

Ionin, Andrey ^{[1
]}

Mokrousova, Daria ^{[1
]}

Seleznev, Leonid ^{[1
]}

Smetanin, Igor ^{[1
]}

Sunchugasheva, Elena ^{[1
]}

Ustinovskii, Nikolai ^{[1
]}

Shutov, Alexey ^{[1
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, 53 Leninskii Pr, Moscow 119991, Russia

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2019年 / 36卷 / 10期

基金：

俄罗斯基础研究基金会;

关键词：

ULTRAVIOLET-LASER; FEMTOSECOND PULSES; REFRACTIVE-INDEX; LIGHT-BEAMS; PROPAGATION; UV; INTENSE; IR;

D O I：

10.1364/JOSAB.36.000G25

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The range of multiple low-ionized filaments, either stochastically distributed or regularly arranged, produced in atmospheric air by terawatt-power picosecond pulses of a KrF laser was investigated for a nearly collimated beam of 60 mm in diameter. Filamentation patterns, energy attenuation, and spectra evolution were monitored along a 100 m pass in the laboratory air. Resonance-enhanced multiphoton (2 + 1) ionization of water vapor naturally contained in the atmosphere and stimulated rotational Raman scattering in nitrogen are identified as the main features of the filamentation mechanism, while a self-induced loss of laser radiation coherence is the main factor limiting a multiple-filamentation range. (C) 2019 Optical Society of America

引用

页码：G25 / G32

页数：8

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