A Raman FEL (Free Electron Laser) at 2mm Wavelength. Design of an Efficiency-Enhanced Raman FEL Oscillator.

Abstract

The nonlinear physics of the free electron laser (FEL) involves waves set up in a nearly cold electron beam when it passes through the undulator. In addition to the pump field and the growing scattered EM wave moving parallel to the electrons, there is a disturbance in the beam space charge caused by the ponderomotive force. In this paper we discuss initial experimentation using a simple Raman oscillator and amplifier. The purpose of the oscillator and amplifier. The purpose of the oscillator is to define initially the regions of substantial gain by observing the emission wavelength. Following this, the gain is observed in and amplifier configuration, using a CO sub 2 laser pumping an NH sub 3 gaseous laser at 140 GHz (2.14mm).

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1985
Accession Number
ADA161955

Entities

People

  • F. G. Yee
  • Jahangir Masud
  • S. P. Schlesinger
  • T. C. Marshall

Organizations

  • Dartmouth College

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Backscattering
  • Diffraction
  • Directed Energy Weapons
  • Electron Beams
  • Electron Energy
  • Electrons
  • Emission
  • Equations
  • Free Electron Lasers
  • Free Electrons
  • Lasers
  • Magnetic Fields
  • Measurement
  • Radiation
  • Space Charge
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics
  • Space