Nonlinear excitation of the Mie resonance in a laser-irradiated cluster

被引:27
作者
Fomichev, SV [1 ]
Popruzhenko, SV
Zaretsky, DF
Becker, W
机构
[1] RRC Kurchatov Inst, Inst Mol Phys, Moscow 123182, Russia
[2] Moscow State Engn Phys Inst, Moscow 115409, Russia
[3] Max Born Inst, D-12489 Berlin, Germany
来源
OPTICS EXPRESS | 2003年 / 11卷 / 19期
关键词
D O I
10.1364/OE.11.002433
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The nonlinear collective electron dynamics inside a large heated cluster irradiated by a strong linearly polarized short laser pulse are considered in the approximation of an incompressible medium. When the incident radiation frequency is near three-photon resonance with the Mie frequency, the field inside the cluster exhibits a third harmonic with an amplitude comparable with that of the fundamental. In the same parameter range, due to shielding, the field inside the cluster at the fundamental frequency is strongly reduced with respect to the incident field. The presence of the third harmonic can lead to a strong enhancement of the production of multiply charged ions. Third-harmonic generation by a cluster under the same conditions is analyzed, too. (C) 2003 Optical Society of America.
引用
收藏
页码:2433 / 2439
页数:7
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