Coherent beam combining in optically coupled laser arrays

Vysotsky, D. V.; Napartovich, Anatoly P.

doi:10.1070/qel16978

Cited by 12 publications

(7 citation statements)

References 177 publications

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“…In the passive phase-locking approach, called self-phase locking, cophasing is obtained based on a coupling mechanism that can be realized by energy coupling (self-organization of the laser emissions) or nonlinear interactions effects [160,[225][226][227][228][229][230][231][232][233][234][235][236][237]. This approach is simple to design and operate.…”

Section: Passive Phase Controlmentioning

confidence: 99%

“…Evanescent coupling of the optical beam between cores leads to a coherent combination of the multiple beams [157]. Phase-locking in the MCFs/MC-PCFsbased systems can be obtained by active or passive methods such as the Talbot effect and 1-to-N-way phase-locking techniques [158][159][160]. In the passive operation, the beams are coupled to each other and the phase-locking happens by supermode selection [161,162].…”

mentioning

confidence: 99%

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Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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Fiber laser technology has been demonstrated as a versatile and reliable approach to 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 is discussed, along with reporting some practical architectures for both continuous and ultrafast fiber lasers.

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Section: Passive Phase Controlmentioning

confidence: 99%

mentioning

confidence: 99%

Towards Ultimate High-Power Scaling: Coherent Beam Combining of Fiber Lasers

2021

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Section: Passive Phase Controlmentioning

confidence: 99%

“…Evanescent-coupling of the optical beam between cores leads to a coherent combination of the multiple beams [157]. Phase-locking in the MCFs/MC-PCFsbased systems can be obtained by active or passive methods such as the Talbot effect and 1-to-N-way phase-locking techniques [158][159][160]. In the passive operation, the beams are coupled to each other and the phase-locking happens by supermode selection [161,162].…”

mentioning

confidence: 99%

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

Fathi¹,

Närhi²,

Gumenyuk³

2021

Preprint

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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.

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“…Coherent beam combining (CBC) of multiple laser modules is an effective solution to obtain higher output power and good beam quality simultaneously [4,5] . When the optical phase and optical axes of each laser beam are controlled, the whole laser array can be regarded as a single laser with a large aperture [6][7][8] . Although the beam quality of this method is not as good as that of a single laser module, it shows superiorities with weaker heat effect and lower cost.…”

Section: Introductionmentioning

confidence: 99%