Tunable high energy giant chirped passively mode-locked Yb-doped fiber laser |
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| Authors: | X J Zhu C H Wang S X Liu G J Zhang D F Hu C Y Zhu J J Wang E X Fang |
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| Affiliation: | 1.Institute of Modern Optical Technologies, Key Laboratory of Advanced Optical Manufacturing of Jiangsu Province,Soochow University,Suzhou,China;2.Department of Electronics and Engineering,Soochow University,Suzhou,China |
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| Abstract: | A tunable, low-repetition rate, all-normal-dispersion Yb-doped fiber laser (YDFL) that is passively mode locked based on a
phase shifted long period fiber grating (PS-LPFG) is demonstrated and proposed. The mode-locking mechanism of the laser is
based on nonlinear polarization evolution (NPE). Using a PS-LPFG as the spectral filter in the laser cavity, the mode-locked
output wavelength can be tuned continuously and smoothly over a spectral range of 10 nm, which is the first time implementation
of a tunable giant chirped pulse with all-fiber format bandpass filter in YDFL. The maximum output pulse energy is 38.9 nJ
at the repetition rate of 2.499 MHz. |
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