Bulk-to-surface-wave self-conversion in optically induced ionization processes

被引:8
作者
Gildenburg, VB [1 ]
Zharova, NA
Bakunov, MI
机构
[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod 603600, Russia
[2] Nizhnii Novgorod State Univ, Dept Radiophys, Nizhnii Novgorod 603600, Russia
来源
PHYSICAL REVIEW E | 2001年 / 63卷 / 06期
关键词
D O I
10.1103/PhysRevE.63.066402
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Nonlinear time evolution of a p-polarized wave mode with inhomogeneous transverse structure producing tunnel ionization of a gas is investigated by numerical simulation and theoretical analysis. A phenomenon of trapping of electromagnetic radiation via its adiabatic conversion into surface waves guided by the field-created plasma structure is found out numerically. This process is accompanied by significant frequency downshifting of the electromagnetic radiation. The underlying physical mechanism is explained using a simple theoretical model. The described phenomena may play significant role in the self-channeling and frequency tuning of intense (similar to 10(14)-10(18) W/cm(2)) laser pulses in dense gases.
引用
收藏
页码:1 / 066403
页数:8
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