Abstract
An erbium-doped fiber laser based on nonlinear polarization rotation (NPR) and negative group velocity dispersion (GVD) is built up. Two different Q-switched mode-locked (QML) operation states which can be distinguished by the properties in time and frequency domains are demonstrated. Besides the QML, stable continuous-wave mode-locked pulses centered at 1560 nm wavelength with pulse-width of 670 fs, harmonic mode-locking, Q-switching, and pulse splitting have been observed, respectively.
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Yang, X., Yang, C.X. Q-switched mode-locking in an erbium-doped femtosecond fiber laser based on nonlinear polarization rotation. Laser Phys. 19, 2106–2109 (2009). https://doi.org/10.1134/S1054660X09210142
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DOI: https://doi.org/10.1134/S1054660X09210142