Phasing a Dual Optical Path System Using an Optical Fiber as a Phase Conjugate Mirror

Abstract

Phase conjugation properties of stimulated Brillouin scattering (SBS) in a short multimode fiber have been investigated with an eye towards its application for a multi-channel double pass master oscillator power amplifier (MOPA) system. In particular, properties of the SBS beam to compensate for the axial and transverse phase distortion between individual channels in a multi-channel amplifier system were studied. Two optical paths were created by covering half of the laser beam with a microscope slide, and also by spatially splitting the wavefronts with a 4 prism set-up. The Stokes beams that traversed the same optical paths as the pump beams were shown to compensate the phase distortion introduced by the different optical paths.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2003
Accession Number
ADA412678

Entities

People

  • Shawn M. Willis

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Brillouin Scattering
  • Diffraction
  • Distortion
  • Frequency Shift
  • Laser Beams
  • Lasers
  • Light Sources
  • Optical Fibers
  • Optics
  • Orientation (Direction)
  • Phase Conjugation
  • Phase Distortion
  • Refractive Index
  • Scattering
  • Waveplates

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy