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Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency

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Abstract

A new passive technique to phase-lock a laser array is proposed and analyzed. It improves the laser combining efficiency with a large number of emitters. Our architecture combines selective coupling based on a phase-contrast filter and resonant phase nonlinearity of amplifiers. A numerical study predicts that with 20 fiber lasers the architecture leads to a phase-locking efficiency which is twice the value observed up to now in published experiments.

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Acknowledgements

The authors thank ASTRIUM and CILAS for their support in the present study.

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Authors and Affiliations

  1. XLIM UMR 6172, CNRS—Université de Limoges, 123 Avenue Albert Thomas, 87060, Limoges, France

    F. Jeux, A. Desfarges-Berthelemot, V. Kermène, J. Guillot & A. Barthelemy

  2. CILAS, 8 Avenue Buffon, ZI La Source, 45063, Orléans, France

    J. Guillot

  3. ASTRIUM SAS, 6 rue L. Pichat, 75016, Paris, France

    F. Jeux

Authors
  1. F. Jeux
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  2. A. Desfarges-Berthelemot
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  3. V. Kermène
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  4. J. Guillot
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  5. A. Barthelemy
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Corresponding author

Correspondence to A. Barthelemy.

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Jeux, F., Desfarges-Berthelemot, A., Kermène, V. et al. Passive coherent combining of lasers with phase-contrast filtering for enhanced efficiency. Appl. Phys. B 108, 81–87 (2012). https://doi.org/10.1007/s00340-012-5042-5

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  • DOI: https://doi.org/10.1007/s00340-012-5042-5

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