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High energy giant chirped passively mode-locked Yb3+-doped fiber laser with nanoseconds to picoseconds pulses |
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| Authors: | Liu D -F Zhu X -J Wang C -H Yu J -J Fang E -X Wang J -J |
| Institution: | 1.Institute of Modern Optical Technologies, Soochow University, Suzhou, Jiangsu, 215006, China ;2.Key Laboratory of Advanced Optical Manufacturing of Jiangsu Province, Suzhou, Jiangsu, 215006, China ;3.Department of Electronics and Engineering, Soochow University, Suzhou, Jiangsu, 215006, China ; |
| Abstract: | We report an all normal dispersion low repetition rate high energy passive mode-locked ytterbium-doped fiber laser with output pulses duration ranging from nanoseconds to picoseconds. The mode-locking mechanism of the laser is based on nonlinear polarization evolution and strong pulses shaping with a cascade long-period fiber grating bandpass filtering in highly chirped pulses. The laser generates highly stable pulses duration from 2.62 ns to 315 ps with a maximum pulse energy of 49.5 nJ and 2.5435 MHz repetition rate. |
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