Abstract
A tunable dual- and triple-wavelength passively mode-locked ytterbium-doped fiber laser in the all-normal-dispersion regime is reported and demonstrated. Using a phase-shifted long-period fiber grating as an all-fiber format spectral filter in the laser cavity, a self-starting stabilized multi-wavelength mode-locking operation is achieved by nonlinear polarization evolution. The mode-locked multi-wavelength output can be tuned continuously and smoothly over a spectral range of 10 nm using the phase-shifted long-period fiber grating bandpass filter without re-adjusting any elements in the system. It opens a new possibility to achieve tunable and controllable multi-wavelength mode-locked high-energy laser output in the all-normal-dispersion cavity in an all-fiber format.
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Acknowledgments
Funding from the National Natural Science Foundation of China (Grant No. 61371113), the Science and Technology program of Nantong (Contract No. BK2013042), Natural Science Foundation of Jiangsu Province of China (SBK201341292), the Open Project of Jiangsu Key Laboratory Universities (KJS1204), the Introduce Talents of Nantong University (Contract No. 03080670), and the project of the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions are acknowledged.
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Zhu, X., Wang, C., Zhang, G. et al. Tunable dual- and triple-wavelength mode-locked all-normal-dispersion Yb-doped fiber laser. Appl. Phys. B 118, 69–73 (2015). https://doi.org/10.1007/s00340-014-5955-2
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DOI: https://doi.org/10.1007/s00340-014-5955-2