Passive laser beam combining With intracavity interferometric combiners

Amiel A. Ishaaya, Nir Davidson, Asher A. Friesem

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


In this paper, we present an approach for passive laser beam combining using plane-parallel intracavity interferometric combiners. With this approach, efficient coherent combining of Gaussian laser beams, transverse single high-order-mode laser beams, and even transverse multimode laser beams is possible. We experimentally obtained a combining efficiency of about 90% when coherently combining 16 solid-state laser channels, as well as when coherently combining four fiber laser channels. We also present an arrangement for simultaneous coherent combining and spectral combining, which could possibly overcome current upscaling limits. We present the basic coherent combining approach, review our past and recent investigations and results with both solid-state and fiber laser configurations, and discuss the possible upscaling and future prospects of this approach.

Original languageEnglish
Article number4768716
Pages (from-to)301-311
Number of pages11
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number2
StatePublished - 1 Mar 2009


  • Coherent combining
  • Laser arrays
  • Laser resonators
  • Phase locking

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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