High Power Fiber Lasers: A Review

Zervas, M.N.; Codemard, Christophe A.

doi:10.1109/jstqe.2014.2321279

Cited by 945 publications

(414 citation statements)

References 220 publications

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“…In recent years fiber lasers have emerged as an extremely practical source of high-power laser radiation [34], with average powers as high as tens of kW. Taking an average power of 50 kW both for the main and for the probe beam (as in recent industrial high-power fiber lasers produced by IPG Photonics, YLS series), a wavelength of λ = 1075 nm (hν ≈ 1.15 eV) and the modulation index m probe = 1, we find the magnitude of the scattered irradiance …”

Section: B Numerical Estimatesmentioning

confidence: 99%

Polarization observables for millicharged particles in photon collisions

et al. 2016

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Particles in a hidden sector can potentially acquire a small electric charge through their interaction with the Standard Model and can consequently be observed as millicharged particles. We systematically compute the production of millicharged scalar, fermion, and vector boson particles in collisions of polarized photons. The presented calculation is model independent and is based purely on the assumptions of electromagnetic gauge invariance and unitarity. Polarization observables are evaluated and analyzed for each spin case. We show that the photon polarization asymmetries are a useful tool for discriminating between the spins of the produced millicharged particles. Phenomenological implications for searches of millicharged particles in dedicated photon-photon collision experiments are also discussed.

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Section: B Numerical Estimatesmentioning

confidence: 99%

Polarization observables for millicharged particles in photon collisions

et al. 2016

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“…High power ytterbium-doped glass fiber lasers and amplifiers are emerging as the workhorse for providing multi-kilowatts and even tens of kilowatts high-brightness laser emission, benefiting from the development of high-brightness semiconductor laser diodes, novel fiber designs, new pumping schemes, and high-power fiber components over the past decade [1], [2]. Conventionally, high power glass fiber lasers and amplifiers are directly pumped by laser diodes.…”

Section: Introductionmentioning

confidence: 99%

5 kW Near-Diffraction-Limited and 8 kW High-Brightness Monolithic Continuous Wave Fiber Lasers Directly Pumped by Laser Diodes

Fang

Shi

et al. 2017

IEEE Photonics J.

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Tandem pumping technique are traditionally adopted to develop >3-kW continuous-wave (cw) Yb 3+ -doped fiber lasers, which are usually pumped by other fiber lasers at shorter wavelengths (1018 nm e.g.). Fiber lasers directly pumped by laser diodes have higher wall-plug efficiency and are more compact. Here we report two high brightness monolithic cw fiber laser sources at 1080 nm. Both lasers consist of a cw fiber laser oscillator and one laser-diode pumped double cladding fiber amplifier in the master oscillator-power amplifier configuration. One laser, using 30-µm-core Yb 3+ -doped fiber as the gain medium, can produce >5-kW average laser power with near diffraction-limited beam quality (M 2 <1.8). The slope efficiency of the fiber amplifier with respect to the launched pump power reached 86.5%. The other laser utilized 50-µm-core Yb 3+ -doped fiber as the gain medium and produced >8-kW average laser power with high beam quality (M 2 : ∼ 4). The slope efficiency of the fiber amplifier with respect to the launched pump power reach 83%. To the best of our knowledge, this is the first detailed report for >5-kW near-diffraction-limited and >8-kW high-brightness monolithic fiber lasers directly pumped by laser diodes.

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“…Another method of DC fibre pumping is side-pumping. According to (Zervas and Codemard 2014) the most common methods employed in side-pumping are: pumping using a V-groove milled in the cladding, angle-polished or tapered pump fibre attached to or fused into the cladding of the signal fibre, and pumping based on a multi-fibre assembly in optical contact surrounded and held together by a common low-index polymer cladding.…”

Section: Introductionmentioning

confidence: 99%

Ray tracing methods in numerical analysis of double-clad microstructured optical fibre coupler

2017

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The article presents the analysis of a double-clad microstructured optical fibre (DC MOF) couplers based on the ray tracing technique. The calculations were done for couplers made of well-defined fibre structures. Such couplers can be employed in laser systems using a DC MOF as a gain medium and a side pumping method which will allow to build fully-fiberized laser systems based on active microstructured fibres.

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High Power Fiber Lasers: A Review

Cited by 945 publications

References 220 publications

Polarization observables for millicharged particles in photon collisions

Polarization observables for millicharged particles in photon collisions

5 kW Near-Diffraction-Limited and 8 kW High-Brightness Monolithic Continuous Wave Fiber Lasers Directly Pumped by Laser Diodes

Ray tracing methods in numerical analysis of double-clad microstructured optical fibre coupler

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