A model for the efficient coupling between intense lasers and subwavelength grating targets

被引：48

作者：

Wang, W. -M. ^{[1
]}

Sheng, Z. -M. ^{[1
,2
,3
]}

Zhang, J. ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100109, Peoples R China

[2] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China

[3] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Peoples R China

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2898456

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：

The interaction of an ultrashort intense laser pulse with a subwavelength rectangular grating target is studied by an analytical model and particle-in-cell simulations. Such interaction excites strong periodic charge separation at the grating surface. With the presence of formed electrostatic fields, the laser field can intensively heat electrons, causing near 100% light absorption. Its dependence on grating parameters is given. At low or moderate laser intensity, there are optimized sizes of grating gibbous cells and grooves as well as groove depths at which absorption maximums are found. At high intensity, the absorption is weakly affected by groove sizes and depths. (C) 2008 American Institute of Physics.

引用

页数：4

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