High-Gain, High-Power Free Electron Lasers

Abstract

The Paladin FEL experiment is shown to exhibit clear and dramatic effects governed by the electron beam velocity distribution for the first time. The FEL integral equation is used to show that there is significant broadening of the gain spectrum due to the Gaussian velocity distribution, and also shows a plateau in the gain evolution along the undulator due to a triangular-shaped velocity distribution. The gain spectra and power evolution from simple, single- mode simulations are compared to the ELF experiments. The microwave power evolution along the undulator is compared as well for both the tapered and untapered undulators. In all cases, the agreement is found to be good.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA245876

Entities

People

  • Jung-hyun Park

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Crystal Lattice Vibrations
  • Current Density
  • Distribution Functions
  • Electron Beams
  • Electron Energy
  • Electrons
  • Equations
  • Free Electron Lasers
  • Free Electrons
  • High Gain
  • Integral Equations
  • Linear Accelerators
  • Phase Velocity
  • Radiation
  • Security
  • Wave Equations

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics