Theoretical analysis of multiplexed volume holograms for spectral beam combining

G. B. Ingersoll, J. R. Leger

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Volume holographic elements can potentially combine many spectrally distinct laser beams using multiplexed Bragg gratings. However, there are theoretical limits imposed by the interactions between these gratings. A method of numerical simulation has been developed to analyze the interactions between many hundreds of multiplexed gratings in a single volume holographic element. We apply this tool to the problem of spectral beam combining of incoherent laser sources. Various system parameters limit the number of beams that can be combined under maximum bandwidth and minimum efficiency constraints. System designs are shown that combine 180-350 lasers ranging over a 60nm bandwidth with theoretical efficiencies in excess of 99%.

Original languageEnglish (US)
Article number71951P
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7195
DOIs
StatePublished - May 25 2009
EventFiber Lasers VI: Technology, Systems, and Applications - San Jose, CA, United States
Duration: Jan 26 2009Jan 29 2009

Keywords

  • Coupled modes
  • Incoherent beam combining
  • Laser beam combining
  • Spectral beam combining
  • Volume Bragg gratings
  • Volume holography

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