Ionization-Induced Small-Scaled Plasma Structures in Tightly Focused Ultrashort Laser Pulses

被引：12

作者：

Efimenko, E. S. ^{[1
]}

Kim, A. V. ^{[1
]}

Quiroga-Teixeiro, M. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603950, Russia

[2] Gridcore AB, SE-41133 Gothenburg, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 01期

关键词：

FIELD-INDUCED IONIZATION; MULTIPHOTON IONIZATION; GAS; FREQUENCY; OPTICS; GENERATION; RADIATION;

D O I：

10.1103/PhysRevLett.102.015002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The laser-matter interaction via optical-field ionization of a medium in a tightly focused ultrashort laser pulse is investigated by finite-difference-time-domain modeling of Maxwell's equations. We show that, unlike in the case of the conventional quasioptical approach, the regime of interaction changes drastically above a certain critical angle of laser beam focusing, resulting in the generation of small-scaled plasma structures which strongly influence the local field distribution and scattering characteristics.

引用

页数：4

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