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Title: Three-dimensional analysis of harmonic generation in self-amplified spontaneous emission.

Abstract

In a high-gain free-electron laser, strong bunching at the fundamental wavelength can drive substantial harmonic bunching and sizable power levels at the harmonic frequencies. In this paper, we investigate the three-dimensional evolution of the harmonic fields based on the coupled Maxwell-Vlasov equations that take into account the nonlinear harmonic interaction. Each harmonic field is the sum of a self-amplified term and a term driven by the nonlinear harmonic interaction. In the exponential gain regime, the growth rate of the dominant nonlinear term is much faster than that of the self-amplified harmonic field. As a result, the gain length and the transverse profile of the first few harmonics are completely determined by those of the fundamental. A percentage of the fundamental power level is found at the third harmonic frequency right before saturation for the current self-amplified spontaneous emission projects.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
11814
Report Number(s):
ANL/ASD/CP-99050
TRN: US0102139
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 21st International Free Electron Laser Conference, Hamburg (DE), 08/23/1999--08/28/1999; Other Information: PBD: 1 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; FREE ELECTRON LASERS; HARMONIC GENERATION; SATURATION; THREE-DIMENSIONAL CALCULATIONS; BEAM BUNCHING; BOLTZMANN-VLASOV EQUATION

Citation Formats

Huang, Z., and Kim, K.-J. Three-dimensional analysis of harmonic generation in self-amplified spontaneous emission.. United States: N. p., 1999. Web.
Huang, Z., & Kim, K.-J. Three-dimensional analysis of harmonic generation in self-amplified spontaneous emission.. United States.
Huang, Z., and Kim, K.-J. Wed . "Three-dimensional analysis of harmonic generation in self-amplified spontaneous emission.". United States. https://www.osti.gov/servlets/purl/11814.
@article{osti_11814,
title = {Three-dimensional analysis of harmonic generation in self-amplified spontaneous emission.},
author = {Huang, Z. and Kim, K.-J.},
abstractNote = {In a high-gain free-electron laser, strong bunching at the fundamental wavelength can drive substantial harmonic bunching and sizable power levels at the harmonic frequencies. In this paper, we investigate the three-dimensional evolution of the harmonic fields based on the coupled Maxwell-Vlasov equations that take into account the nonlinear harmonic interaction. Each harmonic field is the sum of a self-amplified term and a term driven by the nonlinear harmonic interaction. In the exponential gain regime, the growth rate of the dominant nonlinear term is much faster than that of the self-amplified harmonic field. As a result, the gain length and the transverse profile of the first few harmonics are completely determined by those of the fundamental. A percentage of the fundamental power level is found at the third harmonic frequency right before saturation for the current self-amplified spontaneous emission projects.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

Conference:
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