Near-complete absorption of intense, ultrashort laser light by sub-λ gratings

被引：117

作者：

Kahaly, Subhendu ^{[1
]}

Yadav, S. K. ^{[2
]}

Wang, W. M. ^{[3
]}

Sengupta, S. ^{[2
]}

Sheng, Z. M. ^{[3
,4
]}

Das, A. ^{[2
]}

Kaw, P. K. ^{[2
]}

Kumar, G. Ravindra ^{[1
]}

机构：

[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[2] Inst Plasma Res, Bhat 382428, Gandhinagar, India

[3] CAS, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

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

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.101.145001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate near-100% light absorption and increased x-ray emission from dense plasmas created on solid surfaces with a periodic sub-lambda structure. The efficacy of the structure-induced surface plasmon resonance, responsible for enhanced absorption, is directly tested at the highest intensities to date (3 X 10(15) Wcm(-2)) via systematic, correlated measurements of absorption and x-ray emission. An analytical grating model as well as 2D particle-in-cell simulations conclusively explain our observations. Our study offers a definite, quantitative way forward for optimizing and understanding the absorption process.

引用

页数：4

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