J
Johan Nilsson
Researcher at University of Southampton
Publications - 413
Citations - 12066
Johan Nilsson is an academic researcher from University of Southampton. The author has contributed to research in topics: Fiber laser & Laser. The author has an hindex of 49, co-authored 413 publications receiving 11329 citations. Previous affiliations of Johan Nilsson include Samsung & Indian Institute of Technology Madras.
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High power fiber lasers: current status and future perspectives [Invited]
TL;DR: This paper reviews the current state of the art in terms of continuous-wave and pulsed performance of ytterbium-doped fiber lasers, the current fiber gain medium of choice, and by far the most developed in Terms of high-power performance.
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Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power
TL;DR: A highly-efficient cladding-pumped ytterbium-doped fiber laser generating 1.36 kW of continuous-wave output power at 1.1 mum with 83% slope efficiency and near diffraction-limited beam quality is demonstrated.
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Ytterbium-doped fiber amplifiers
TL;DR: The ytterbium-doped fiber amplifier offers a number of attractive features, including a broad-gain bandwidth and a high efficiency, due in large part to its freedom from various competing processes seen in other rare-earth dopants.
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High power fiber lasers
Johan Nilsson,Jayanta K. Sahu,Yoonchan Jeong,V. Philippov,Daniel B. S. Soh,Christophe A. Codemard,Pascal Dupriez,J. W. Kim,David J. Richardson,A. Malinowski,A. Piper,Jonathan H. V. Price,Kentaro Furusawa,W.A. Clarkson,David N. Payne +14 more
TL;DR: These results were obtained with (nearly) diffraction-limited beam quality, which determines the ability to focus to a tight spot, and this, rather than the power itself, determines the power density achievable on a target.
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Power Scaling of Single-Frequency Ytterbium-Doped Fiber Master-Oscillator Power-Amplifier Sources up to 500 W
TL;DR: In this article, continuous-wave single-frequency master- oscillator power-amplifier (MOPA) sources based on ytterbium-doped fibers (YDFs) with particular attention to their recent advances and their experimental results were discussed.