Efficiency Enhancement, Sideband Suppression, and Optical Pulse Generation in Strongly Tapered Free-Electron Lasers

Abstract

We have carried out fully self-consistent simulations of FEL dynamics in strongly tapered amplifiers. These are one-dimensional initial-value studies in which the electrons obey the single particle Hamiltonian equations that include the magnetic field of the wiggler as well as the space and time-dependent radiation field. The radiation field obeys Maxwell's equation (in the paraxial approximation), with the source current calculated self-consistently by summing over the electrons. The results of this simulation for the strong linear taper confirms the predictions of our earlier analytical theory on strong sideband suppression.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1999
Accession Number
ADA381596

Entities

People

  • Amitava Bhattacharjee

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Demographic Cohorts
  • Efficiency
  • Electrons
  • Equations
  • Free Electron Lasers
  • Free Electrons
  • Frequency
  • Laser Amplifiers
  • Lasers
  • Magnetic Fields
  • Nonlinear Dynamics
  • Oscillators
  • Physics
  • Radiation
  • Sidebands
  • Simulations

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Plasma Physics / Magnetohydrodynamics
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Space