Kahaly, Subhendu ; Yadav, S. K. ; Wang, W. M. ; Sengupta, S. ; Sheng, Z. M. ; Das, A. ; Kaw, P. K. ; Kumar, G. Ravindra (2008) Near-complete absorption of intense, ultrashort laser light by sub-λ gratings Physical Review Letters, 101 (14). 145001_1-145001_4. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v101/i14/e145001
Related URL: http://dx.doi.org/10.1103/PhysRevLett.101.145001
Abstract
We demonstrate near-100% light absorption and increased x-ray emission from dense plasmas created on solid surfaces with a periodic sub-λ structure. The efficacy of the structure-induced surface plasmon resonance, responsible for enhanced absorption, is directly tested at the highest intensities to date (3×1015W cm-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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 29679 |
| Deposited On: | 23 Dec 2010 05:37 |
| Last Modified: | 03 Jun 2011 14:58 |
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