Erbium:Ytterbium Codoped Large-Core Fiber Laser With 297-W Continuous-Wave Output Power

We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) codoped fiber laser that produces 297 W of continuous-wave output at 1567 nm. The slope efficiency with respect to the launched pump power changed from 40% to 19% at higher output power due to the onset of Yb colasing at...

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Veröffentlicht in:	IEEE journal of selected topics in quantum electronics 2007-05, Vol.13 (3), p.573-579
Hauptverfasser:	Jeong, Yoonchan, Harker, Andrew, Lovelady, Mike, Piper, Andy, Yoo, Seongwoo, Codemard, Christophe A., Nilsson, Johan, Sahu, Jayanta K., Payne, David N., Horley, R., Turner, P.W., Hickey, Louise
Format:	Artikel
Sprache:	eng
Schlagworte:	Accumulation Continuous fibers Diodes Erbium Erbium-doped fiber lasers Fiber lasers Gain Laser excitation lasers optical fiber amplifiers optical fiber lasers Optical fibers Power amplifiers Power generation Power lasers Pulsation Pump lasers Pumps Quantum electronics Spectroscopy ytterbium
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Zusammenfassung:	We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) codoped fiber laser that produces 297 W of continuous-wave output at 1567 nm. The slope efficiency with respect to the launched pump power changed from 40% to 19% at higher output power due to the onset of Yb colasing at 1067 nm. However, the Yb colasing was essential for the suppression of catastrophic pulsation at high pump powers that otherwise results if the Yb-band gain is allowed to build up. Spectroscopic characteristics of the fiber and the impact of the Yb colasing on the 1567-nm slope efficiency are also discussed.
ISSN:	1077-260X 1558-4542
DOI:	10.1109/JSTQE.2007.897178