Influence of spatial focusing on the characteristics of the filamentation of femtosecond laser radiation in the air

被引：2

作者：

Geints Y.E. ^{[1
]}

Zemlyanov A.A. ^{[1
]}

机构：

[1] Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, pl. Akademika Zueva 1, Tomsk

来源：

Atmospheric and Oceanic Optics | 2010年 / 23卷 / 4期

基金：

俄罗斯基础研究基金会;

关键词：

Oceanic Optic; Beam Radius; Kerr Nonlinearity; Femtosecond Laser Radiation; Geometric Focus;

D O I：

10.1134/S1024856010040056

中图分类号：

学科分类号：

摘要：

The regularities of the self-focusing and filamentation of spatially focused ultrashort laser radiation in the air have been studied theoretically. The influence of the initial beam focusing on the size and power parameters of the formed filaments has been analyzed. It has been found that the focusing of femtosecond laser radiation can lead to the formation of several spatial zones characterized by a weak change of the beam radius. These zones have a different length and are characterized by different values of the peak intensity of the pulse, the minimal beam size, and the density of free electrons depending on the strength of focusing. © 2010, Pleiades Publishing, Ltd.

引用

页码：270 / 277

页数：7

共 18 条

[1]

Akhmanov S.A., Vysloukh V.A., Chirkin A.S., The Optics of Femtosecond Pulses, (1988)

[2]

Silberberg Y., Collapse of Optical Pulses, Opt. Lett., 15, 22, pp. 1282-1284, (1990)

[3]

Chin S.L., Chen Y., Kosareva O., Kandidov V.P., Theberge F., What is a Filament?, Laser Phys., 18, 8, pp. 962-964, (2008)

[4]

Couairon A., Myzyrowicz A., Femtosecond Filamentation in Transparent Media, Phys. Rep., 441, pp. 47-189, (2007)

[5]

Braun A., Korn G., Liu X., Du D., Squier J., Monrou G., Self-Channeling of High-Peak-Power Femtosecond Laser Pulses in Air, Opt. Lett., 20, 1, pp. 73-75, (1995)

[6]

Lugovoi V.N., Prokhorov A.M., A Possible Explanation of the Smallscale Self-Focusing Filaments, JETP Lett., 7, 5, pp. 117-119, (1968)

[7]

Mlejnek M., Wright E.M., Moloney J.V., Dynamic Spatial Replenishment of Femtosecond Pulses Propagating in Air, Opt. Lett., 23, 5, pp. 382-384, (1998)

[8]

Kandidov V.P., Shlenov S.A., Kosareva O.G., Filamentation of High-Power Femtosecond Laser Radiation, Kvantov. Elektron., 39, 3, pp. 205-228, (2009)

[9]

Theberge F., Liu W., Simard P., Becker A., Chin S.L., Plasma Density inside a Femtosecond Laser Filament in Air: Strong Dependence on External Focusing, Phys. Rev. E, 74, (2006)

[10]

Ionin A.A., Kudryashov S.I., Makarov S.V., Seleznev L.V., Sinitsyn D.V., Multiple Filamentation of Intense Femtosecond Laser Pulses in Air, Pis’ma Zh. Eksp. Teor. Fiz., 90, 6, pp. 467-472, (2009)

← 1 2 →