Diode-pumped narrow linewidth multi-kilowatt metalized Yb fiber amplifier

Diode-pumped narrow linewidth multi-kilowatt metalized Yb fiber amplifier

We investigate high brightness pumping of a multi-kilowatt Yb fiber amplifier in a bi-directional pumping configuration. Each pump outputs 2 kW in a 200 μm, 0.2 NA multimode fiber. Gold-coated specialty gain fibers, with a 17 μm mode field diameter and a 5 dB/m pump absorption, have been developed....

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Veröffentlicht in:Optics letters 2016-11, Vol.41 (22), p.5202-5205
Hauptverfasser: Yu, Charles X, Shatrovoy, Oleg, Fan, T Y, Taunay, Thierry F
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Amplification
Fibers
Gain
Instability
Optical pumping
Power efficiency
Pumps
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Zusammenfassung:We investigate high brightness pumping of a multi-kilowatt Yb fiber amplifier in a bi-directional pumping configuration. Each pump outputs 2 kW in a 200 μm, 0.2 NA multimode fiber. Gold-coated specialty gain fibers, with a 17 μm mode field diameter and a 5 dB/m pump absorption, have been developed. The maximum fiber amplifier output power is 3.1 kW, limited by multimode instability, with 90% O-O efficiency and M
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.005202