Journal
PHOTONICS RESEARCH
Volume 9, Issue 7, Pages 1336-1342Publisher
CHINESE LASER PRESS
DOI: 10.1364/PRJ.427458
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Funding
- European Regional Development Fund [2017/COL/007, 82085]
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The study investigates the intermittent dynamics switching on the route to chaos in a discrete-mode laser with long time-delayed feedback, revealing two types of dynamics switching and analyzing the relationship between the duty cycle of period-one oscillation and the feedback ratio. A map of the dynamics distribution in the parameter space of feedback ratio and bias current is plotted for a better understanding of dynamics evolution in long external cavity discrete-mode lasers.
Intermittent dynamics switching on the route to chaos in a discrete-mode laser with long time-delayed feedback is experimentally and numerically studied by analyzing the time series, power spectra, and phase portraits. The results show two types of dynamics switching: one or multiple times regular intermittent dynamics switching between stable state and square-wave envelope period-one oscillation within one feedback round time, and the irregular intermittent dynamics switching between stable state and quasi-periodic or multi-states or chaos with higher feedback ratio and bias currents. The relationship between the duty cycle of period-one oscillation and the feedback ratio has been analyzed. The map of the dynamics distribution in the parameter space of feedback ratio and bias current is plotted for a better understanding of dynamics evolution in long external cavity discrete-mode lasers. (C) 2021 Chinese Laser Press
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