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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 19509–19518

Model for passive coherent beam combining in fiber laser arrays

Tsai-wei Wu, Wei-zung Chang, Almantas Galvanauskas, and Herbert G. Winful  »View Author Affiliations

Optics Express, Vol. 17, Issue 22, pp. 19509-19518 (2009)

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We present a new model for studying the beam combining mechanism, spectral and temporal dynamics, the role of nonlinearity, and the power scaling issue of discretely coupled fiber laser arrays. The model accounts for the multiple longitudinal modes of individual fiber lasers and shows directly the formation of the composite-cavity modes. Detailed output power spectra and their evolution with increasing array size and pump power are also explored for the first time. In addition, it is, to our knowledge, the only model that closely resembles the real experimental conditions in which no deliberate control of the fiber lengths (mismatch) is required while highly efficient coherent beam combining is still attained.

© 2009 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(140.3290) Lasers and laser optics : Laser arrays
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3298) Lasers and laser optics : Laser beam combining

ToC Category:
Lasers and Laser Optics

Original Manuscript: August 17, 2009
Revised Manuscript: October 2, 2009
Manuscript Accepted: October 4, 2009
Published: October 13, 2009

Tsai-wei Wu, Wei-zung Chang, Almantas Galvanauskas, and Herbert G. Winful, "Model for passive coherent beam combining in fiber laser arrays," Opt. Express 17, 19509-19518 (2009)

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  22. T. Wu, W. Chang, A. Galvanauskas, and H. G. Winful, unpublished.

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