Passive harmonic mode locked all-normal-dispersion Yb-doped fibre lasers |
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Authors: | Kong Ling-Jie Xiao Xiao-Sheng and Yang Chang-Xi |
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Institution: | State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China |
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Abstract: | Passive harmonic mode-locking of dissipative solitons is demonstrated in all-normal dispersion Yb-doped fibre lasers. A difference equation model of the mode-locked fibre lasers is adopted to simulate the intra-cavity nonlinear dynamics. Hysteresis phenomena around the mode-locking threshold, and the effect of introducing linear phase bias are discussed. The passive harmonic mode-locking as one kind of multipulsing operations is revealed. Moreover, the simulation shows the bistability between multipulsing and single-pulse or period multiplication. |
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Keywords: | fibre laser mode-locking ytterbium |
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