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Proceedings Paper

Theoretical analysis of multiplexed volume holograms for spectral beam combining
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Paper 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%.

Paper Details

Date Published: 19 February 2009
PDF: 12 pages
Proc. SPIE 7195, Fiber Lasers VI: Technology, Systems, and Applications, 71951P (19 February 2009); doi: 10.1117/12.809524
Show Author Affiliations
G. B. Ingersoll, Univ. of Minnesota (United States)
J. R. Leger, Univ. of Minnesota (United States)

Published in SPIE Proceedings Vol. 7195:
Fiber Lasers VI: Technology, Systems, and Applications
Denis V. Gapontsev; Dahv A. Kliner; Jay W. Dawson; Kanishka Tankala, Editor(s)

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