Kramers-Kronig self-phasing effect in passive beam combining resonators

W. Minster Kunkel, James R. Leger

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Passive phase adjustment via Kramers-Kronig (K-K) phase in coherent beam combining is reviewed and assessed. While recent experiments and modeling show that K-K does not improve the average output power when it is the only passive phasing mechanism in a resonator, K-K does improve the combining efficiency in the presence of other effects such as wavelength tuning, Kerr nonlinearity, and regenerative phase. For a two-laser array, an improvement in output power can be achieved by K-K alone if the constant of proportionality α between the gain and the K-K phase is very large (e.g., α = 100 rad/Neper), but this is unlikely to be practical in available materials, and does not appear to scale with array size.

Original languageEnglish (US)
Title of host publicationLaser Resonators, Microresonators, and Beam Control XXI
EditorsVladimir S. Ilchenko, Alexis V. Kudryashov, Alan H. Paxton
PublisherSPIE
ISBN (Electronic)9781510624504
DOIs
StatePublished - 2019
EventLaser Resonators, Microresonators, and Beam Control XXI 2019 - San Francisco, United States
Duration: Feb 4 2019Feb 7 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10904
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceLaser Resonators, Microresonators, and Beam Control XXI 2019
CountryUnited States
CitySan Francisco
Period2/4/192/7/19

Keywords

  • Fiber lasers
  • Laser arrays
  • Passive coherent beam combining

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