Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep13680
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Funding
- National Natural Science Foundation of China [61138006, 61275136, 11121504]
- Research Fund for the Doctoral Program of Higher Education of China [20120073120085]
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While the recent discovered new mode-locking mechanism - dissipative soliton - has successfully improved the pulse energy of 1 mu m and 1.5 mu m fiber lasers to tens of nanojoules, it is still hard to scale the pulse energy at 2 mu m due to the anomalous dispersion of the gain fiber. After analyzing the intracavity pulse dynamics, we propose that the gain fiber should be condensed to short lengths in order to generate high energy pulse at 2 mu m. Numerical simulation predicts the existence of stable 2 mu m dissipative soliton solutions with pulse energy over 10 nJ, comparable to that achieved in the 1 mu m and 1.5 mu m regimes. Experimental operation confirms the validity of the proposal. These results will advance our understanding of mode-locked fiber lasers at different wavelengths and lay an important step in achieving high energy ultrafast laser pulses from anomalous dispersion gain media.
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