A model for the efficient coupling between intense lasers and subwavelength grating targets
- 1 March 2008
- journal article
- research article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 15 (3), 030702
- https://doi.org/10.1063/1.2898456
Abstract
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 gratingsurface. 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.Keywords
This publication has 12 references indexed in Scilit:
- Optimum Hot Electron Production with Low-Density Foams for Laser Fusion by Fast IgnitionPhysical Review Letters, 2006
- Metal Nanoplasmas as Bright Sources of Hard X-Ray PulsesPhysical Review Letters, 2003
- Optical transmission through subwavelength metallic gratingsPhysical Review B, 2002
- Intense Picosecond X-Ray Pulses from Laser Plasmas by Use of Nanostructured “Velvet” TargetsPhysical Review Letters, 2000
- On electron acceleration by intense laser pulses in the presence of a stochastic fieldPhysics of Plasmas, 1999
- Efficient coupling of high-intensity subpicosecond laser pulses into solidsApplied Physics Letters, 1993
- Inward energy transport in tokamak plasmasPhysical Review Letters, 1992
- A novel type of energy metabolism involving fermentation of inorganic sulphur compoundsNature, 1987
- Tunable Coherent X-raysScience, 1985
- Local-field enhancement on rough surfaces of metals, semimetals, and semiconductors with the use of optical second-harmonic generationPhysical Review B, 1984