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Title: Enhancement of the high-order harmonic generation from the gold plume using the time-resolved plasma spectroscopy

We present systematic time-resolved investigations of plasma conditions for achieving the maximum cutoff and maximum conversion efficiency of high-order harmonic generation from gold plasma within the plateau. We analyzed harmonic generation under different laser-plasma conditions. We also performed simulations to calculate the ionization state of the gold plasma, the free electron density, and singly charged ion density at different prepulse intensities. By optimizing the plasma conditions, we observed a harmonic cutoff at the 53rd order ({lambda}=15.09 nm). We estimate the conversion efficiency of the harmonics within the plateau region to be 2x10{sup -6}.
Authors:
; ;  [1] ;  [2]
  1. Institut National de la Recherche Scientifique, Energie, Materiaux et Telecommunications, 1650 Lionel-Boulet, Varennes, Quebec J3X 1S2 (Canada) and Scientific Association Akadempribor, Academy of Sciences of Uzbekistan, Akademgorodok, Tashkent 100125 (Uzbekistan)
  2. (Canada)
Publication Date:
OSTI Identifier:
21062110
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 102; Journal Issue: 7; Other Information: DOI: 10.1063/1.2786026; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRON DENSITY; GOLD; HARMONIC GENERATION; ION DENSITY; IONIZATION; LASERS; OPTIMIZATION; PLASMA; PLASMA PRODUCTION; PLUMES; SIMULATION; SPECTROSCOPY; TIME RESOLUTION