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Investigation of noise-like pulses from a net normal Yb-doped fiber laser based on a nonlinear polarization rotation mechanism

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Abstract

We investigated the characteristics of noise-like pulses (NLPs) from a net normal dispersion Yb-doped fiber laser (YDFL) by using the grating pairs (GPs) inside the laser cavity as a dispersion compensation element. Without the insertion of the slit inside the laser cavity, the operation of the YDFL is at an NLP state with the double-scale intensity autocorrelation trace once the mode-locked pulses are generated. Through the dispersion delay line outside the laser cavity, the substantial temporal compression of the NLPs has been demonstrated. After inserting the slit between the GPs as a bandpass filter, the operation state of the YDFL can be switched between the NLPs and the dissipated solitons by means of a pump power. Besides, the NLPs can also transit to the bound solitons as the YDFL is operated within long and short wavelength regimes through the spatial shift of the slit.

© 2016 Optical Society of America

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Supplementary Material (2)

NameDescription
Visualization 1: MP4 (10845 KB)      IAC trace evolution as pump power increases.
Visualization 2: MP4 (11341 KB)      Spectrum evolution as pump power increases.

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