Experimental and Theoretical Studies of Phase Modulation in Yb-doped Fiber Amplifiers

Abstract

We present detailed studies of the effect of sinusoidal phase modulation on stimulated Brillouin scattering (SBS) in ytterbium-doped fiber amplifiers. Based on a time-dependent SBS model, SBS enhancement factor versus pump linewidth for different modulation depths ranging from 0 to, and modulation frequencies ranging from 30 MHz to 500 MHz were analyzed. In addition, experimental validation of SBS suppression via sinusoidal phase modulation is presented with experimental results agreeing well with the model and simulations. Furthermore, narrow linewidth coherent beam combining (CBC) of 5 sinusoidal phase modulated lasers is demonstrated via LOCSET.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2012
Accession Number
ADA627959

Entities

People

  • Angel Flores
  • Christopher Vergien
  • Chunte Lu
  • Craig Robin
  • Iyad Dajani
  • Shadi Naderi

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Amplifiers
  • Brillouin Scattering
  • Computational Science
  • Differential Equations
  • Equations
  • Frequency
  • Lasers
  • Military Research
  • Navier Stokes Equations
  • Nonlinear Optics
  • Optical Fiber Lasers
  • Optical Properties
  • Partial Differential Equations
  • Phase Modulation
  • Simulations

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy