Coherent addition of spatially incoherent light beams | Zendy

Amiel A. Ishaaya | Zendy; Liran Shimshi | Zendy; Nir Davidson | Zendy; Asher A. Friesem | Zendy

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Coherent addition of spatially incoherent light beams

Author(s) -

Amiel A. Ishaaya,

Liran Shimshi,

Nir Davidson,

Asher A. Friesem

Publication year - 2004

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.004929

Subject(s) - optics , multi mode optical fiber , laser , resonator , laser beam quality , physics , beam (structure) , light beam , laser beams , quality (philosophy) , talbot effect , optical fiber , diffraction , quantum mechanics

We report on efficient coherent addition of spatially incoherent multimode laser beam distributions. Such addition is demonstrated within a multi-channel laser resonator configuration, obtaining more than 90% combining efficiency while preserving the good beam quality. We explain the rather surprising physical phenomenon of coherently adding spatially incoherent light by self-phase-locking of each of the modal components within the multimode beams. Our approach could lead to significantly higher output powers concomitantly with good beam qualities than were hitherto possible in laser systems.

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