Coherent Combining of High-Power Yb Fiber Amplifiers

Abstract

Commercial 0.5-kW Yb-doped fiber amplifiers have been characterized and been found to be suitable for coherent beam combining. Eight such fiber amplifiers have been coherently combined in a tiled-aperture configuration with 78% combining efficiency. The power-in-the-bucket vertical beam quality of the combined output is 1.25 times diffraction limited at full power. The beam-combining performance is independent of output power.

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Document Details

Document Type
Technical Report
Publication Date
Apr 20, 2011
Accession Number
ADA569704

Entities

People

  • Antonio Sanchez
  • Charles X. Yu
  • Daniel V. Murphy
  • Kris C. Goldizen
  • Shawn M. Redmond
  • Steven J. Augst
  • Tso Y. Fan

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Amplifiers
  • Bandwidth
  • Closed Loop Systems
  • Control Systems
  • Far Field
  • Frequency
  • Intensity
  • Lasers
  • Measurement
  • Modulation
  • Modulators
  • Near Field
  • Phase Control
  • Phase Modulators
  • United States Government
  • Wave Mixing

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.