skip to main content

SciTech ConnectSciTech Connect

Title: Resonant absorption and not-so-resonant absorption in short, intense laser irradiated plasma

An analytical model for laser-plasma interaction during the oblique incidence by an ultrashort ultraintense p-polarized laser on a solid-density plasma is proposed. Both the resonant absorption and not-so-resonant absorption are self-consistently included. Different from the previous theoretical works, the physics of resonant absorption is found to be valid in more general conditions as the steepening of the electron density profile is considered. Even for a relativistic intensity laser, resonant absorption can still exist under certain plasma scale length. For shorter plasma scale length or higher laser intensity, the not-so-resonant absorption tends to be dominant, since the electron density is steepened to a critical level by the ponderomotive force. The laser energy absorption rates for both mechanisms are discussed in detail, and the difference and transition between these two mechanisms are presented.
Authors:
; ; ; ; ; ; ;  [1] ; ;  [2] ;  [1] ;  [3] ;  [4]
  1. College of Science, National University of Defense Technology, Changsha 410073 (China)
  2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)
  3. (China)
  4. Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)
Publication Date:
OSTI Identifier:
22227980
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 7; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAM-PLASMA SYSTEMS; ELECTRON DENSITY; ENERGY ABSORPTION; IRRADIATION; LASER-PRODUCED PLASMA; PLASMA DENSITY; PLASMA PRODUCTION; PONDEROMOTIVE FORCE; RELATIVISTIC PLASMA; SOLID-STATE PLASMA