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10 GHz passive harmonic mode-locking in Er-Yb double-clad fiber laser

Authors:	Grzegorz Sobon Karol Krzempek Krzysztof M Abramski

Institution:	^a Laser & Fiber Electronics Group, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland ^b Electrical Engineering Department, Princeton University, Princeton NJ, 08544, USA

Abstract:	In this paper we report passive harmonic mode-locking of an Erbium/Ytterbium-doped double-clad fiber laser with repetition rates up to 10 GHz. The modes synchronization was obtained using Nonlinear Polarization Rotation mechanism. The stable operation at 634th harmonic of the fundamental (15.8 MHz) repetition frequency was achieved. Soliton pulses with the duration of less than 900 fs and 300 mW average output power were obtained.

Keywords:	Fiber laser Passive mode-locking Harmonic mode-locking Nonlinear polarization rotation
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