Mr. Kaile Wang Profile

Kaile Wang

at Northwest Univ

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Proceedings Article | 20 December 2019 Paper

Wavelength self-sweeping Yb-doped bi-directional fiber ring laser

Kaile Wang, Zengrun Wen, Baole Lu, Xinyuan Qi, Jintao Bai

Proceedings Volume 11209, 112092I (2019) https://doi.org/10.1117/12.2548390

KEYWORDS: Fiber lasers, Laser applications, Ytterbium

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Experimental observation of reverse wavelength self-sweeping effect is reported in a bidirectional ytterbium-doped fiber ring laser. The wavelength self-sweeping regime - that a spontaneous, periodical, stable - can be obtained by the dynamical induced grating formed in an active medium due to the spatial hole burning. In this work, the reverse self- sweeping effect operates, for the first time, to the best of our knowledge, in 1.037 μm wavelength region. Besides, the fiber laser can generate a self-pulse signal and reverse wavelength self-sweeping with an average rate of 0.38 nm/s in the largest coverage of 2.75 nm. The self-pulse signal that modulated by inter-mode beating can be observed and the microsecond pulse train envelopes are in the range of 116-128 kHz.

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