Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers

Version 1 : Received: 17 November 2021 / Approved: 19 November 2021 / Online: 19 November 2021 (12:37:45 CET)

How to cite: Fathi, H.; Närhi, M.; Gumenyuk, R. Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers. Preprints 2021, 2021110351 (doi: 10.20944/preprints202111.0351.v1). Fathi, H.; Närhi, M.; Gumenyuk, R. Towards Ultimate High-power Scaling: Coherent Beam Combing of Fiber Lasers. Preprints 2021, 2021110351 (doi: 10.20944/preprints202111.0351.v1).

Abstract

Fiber laser technology has been demonstrated as a versatile and reliable approach for laser source manufacturing with a wide range of applicability in various fields ranging from science to industry. The power/energy scaling of single fiber laser systems has faced several fundamental limitations. To overcome them and to boost the power/energy level even further, combining the output powers of multiple lasers has become the primary approach. Among various combining techniques, the coherent beam combining of fiber amplification channels is the most promising approach, instrumenting ultra-high power/energy lasers with near-diffraction-limited beam quality. This paper provides a comprehensive review of the progress of coherent beam combining for both continuous-wave and ultrafast fiber lasers. The concept of coherent beam combining from basic notions to specific details of methods, requirements, and challenges are discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

Keywords

Fiber lasers and amplifiers; pulsed lasers; continuous wave; power scaling; coherent beam combining

Subject

PHYSICAL SCIENCES, Atomic & Molecular Physics

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