Multichannel polarization stabilization for coherently combined fiber laser arrays

Gregory D. Goodno, Stuart J. McNaught, Mark E. Weber, S. Benjamin Weiss

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate a simplified approach toward active polarization control in coherently combined laser architectures. By leveraging optical phase dithers applied by a phase controller, polarization error signals are generated for an entire laser array from a single beam sample of the combined output, enabling closed-loop polarization locking of non-polarization-maintaining fibers. The concept is shown to be compatible with both hill-climbing and synchronous multidither phase control methods. Simultaneous phase locking and polarization locking was demonstrated for a five-fiber array with >99% phasing efficiency and >20 dB polarization extinction ratio.

Original languageEnglish
Pages (from-to)4272-4274
Number of pages3
JournalOptics Letters
Volume37
Issue number20
DOIs
StatePublished - 15 Oct 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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