2 kW CW ytterbium fiber laser with record diffraction-limited brightness

Gapontsev, Valentin; Gapontsev, D.V.; Platonov, N.S.; Shkurikhin, O.; Fomin, V. V.; Mashkin, A.; Abramov, M.V.; Ferin, S.

doi:10.1109/cleoe.2005.1568286

Cited by 81 publications

(47 citation statements)

References 1 publication

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“…GTWave pumping is a unique coupling structure, different from conventional transport mode pumping, tapered fused bundle (TFB) pumps light along the fiber axis gradually coupled to the signal fiber [9]. This requires a certain length to achieve coupling of the pumping light without larger outer diameter and higher numerical aperture.…”

Section: Efficient Coupling Technologymentioning

confidence: 99%

Review on developments of novel specialty fibers: performance, application and process

Chen

et al. 2014

Front. Optoelectron.

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This paper reviews the development progress of optical fiber, the producing and application of the specialty optical fiber in the world. Finally it states the leading technology of optical fiber of the world. Specialty optical fibers are series of optical fiber which could satisfy special requirements. Recently, the rapidly growing need from fiber to the home (FTTH), sensors, active optical link, energy conversion and delivery and fiber laser attracts researchers and optical companies to explore more possibilities of optical fiber and some novel specialty optical fibers were invented for the efforts. Bending insensitive optical fiber with the ability of extreme 3 mm bending diameter makes it possible to use the optical fiber as the electric wire in some extremely compact devices. Higher power was achieved in the fiber laser field with the development of rare earth doped fiber. Nanomaterials such as Au particles and ZnO nanostructures were utilized to extend the application in sensors and energy conversion. Pure silica design was commercialized to improve the radiation resistance of sensors based on fiber optics.

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Section: Efficient Coupling Technologymentioning

confidence: 99%

Review on developments of novel specialty fibers: performance, application and process

Chen

et al. 2014

Front. Optoelectron.

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“…They appear thus as good candidates for aeronautical and space applications. Recent developments have redefined the ranges of 'high power' fiber sources: a 1.36 kW SM CW Yb-fiber laser at 1 µm [1], 2 kW CW Yb-fiber laser with M 2 < 1.2 quality at 1 µm [2]. At 1.5 µm, 1.15 mJ in a pulsed Er/Yb fiber MOPA has recently been achieved [3].…”

Section: Introductionmentioning

confidence: 98%

Performance and limitations of high brightness Er+3–Yb3+ fiber sources

Canat

Jaouën

Mollier³

2006

Comptes Rendus. Physique

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“…In recent years dramatic advances in fiber laser technologies have made possible conventional single-strand cladding-pumped fiber lasers with output powers beyond a kilowatt with high beam quality [1]- [4]. The highest output powers are reached with ytterbium-doped fibers (YDFs) in relatively simple configurations that generate broadband laser output.…”

Section: Introductionmentioning

confidence: 99%

“…Following the burst of power from fiber lasers [1]- [4], the single-frequency output power was further extended to the 100-W level by the use of a large-core, double-clad YDF and a pump source that was much superior to previously used ones [17]. The final-stage power amplifier utilized a 9.4 m long fiber with a 28 µm diameter, 0.06 numerical aperture (NA) core.…”

Section: Introductionmentioning

confidence: 99%

Power Scaling of Single-Frequency Ytterbium-Doped Fiber Master-Oscillator Power-Amplifier Sources up to 500 W

Jeong

Nilsson

Sahu

et al. 2007

IEEE J. Select. Topics Quantum Electron.

241

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We discuss continuous-wave single-frequency master oscillator -power amplifier (MOPA) sources based on ytterbium-doped fibers (YDFs) with particular attention to their recent dramatic advances and our up-to-date experimental results. This includes a 402 W planepolarized MOPA source and a 511 W random-polarized MOPA source. In these MOPAs, the final-stage high-power amplifier could operate with high efficiency of 70% -80% and even more, and a high gain of over 20 dB in a near diffraction-limited beam. We could see at least 7 dB enhancement of the stimulated Brillouin scattering (SBS) threshold for the 402 W polarization-maintaining (PM) YDF. In fact, we did not see any sign of SBS even at the highest output power. We eventually observed SBS appearance at around 500 W for the non-PM YDF. The observed SBS strengths were far weaker than expected in theory unless we allowed for the Brillouin gain reduction from thermal Brillouin gain broadening induced by the quantum-defect heating.

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2 kW CW ytterbium fiber laser with record diffraction-limited brightness

Cited by 81 publications

References 1 publication

Review on developments of novel specialty fibers: performance, application and process

Review on developments of novel specialty fibers: performance, application and process

Performance and limitations of high brightness Er+3–Yb3+ fiber sources

Power Scaling of Single-Frequency Ytterbium-Doped Fiber Master-Oscillator Power-Amplifier Sources up to 500 W

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