期刊
OPTICS EXPRESS
卷 17, 期 23, 页码 20707-20713出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.020707
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We observed generation of stable picoseconds pulse train and double-scale optical lumps with picosecond envelope and femtosecond noise-like oscillations in the same Yb-doped fiber laser with all-positive-dispersion cavity mode-locked due to the effect of non-linear polarization evolution. In the noise-like pulse generation regime the auto-correlation function has a non-usual double (femto- and picosecond) scale shape. We discuss mechanisms of laser switching between two operation regimes and demonstrate a good qualitative agreement between experimental results and numerical modeling based on modified nonlinear Schrodinger equations. (C) 2009 Optical Society of America
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