Affiliation:
1. Ultrafast Laser Laboratory, Key Laboratory of Opto‐electronic Information Science and Technology of Ministry of Education, School of Precision Instruments and Opto‐electronics Engineering Tianjin University Tianjin 300072 China
2. Racah Institute of Physics Hebrew University of Jerusalem Jerusalem 91904 Israel
3. Laboratoire ICB UMR 6303 CNRS Université de Bourgogne 9 avenue A. Savary Dijon 21000 France
Abstract
AbstractWhen a laser cavity supports the propagation of several ultrashort pulses, these pulses can form compact bound states called soliton molecules. Soliton molecules are fascinating objects of nonlinear science, presenting striking analogies with their matter molecule counterparts. The relative timing and phase between the copropagating pulses are the most salient internal degrees of freedom of the soliton molecule. The soliton pair, composed of two identical pulses, constitutes the chief soliton molecule of fundamental interest. Its two major internal degrees of freedom allow self‐oscillating soliton molecules, which have been recurrently observed. However, despite theoretical predictions, the low‐dimensional chaotic dynamics of a soliton‐pair molecule remain elusive. This article reports the observation of chaotic soliton‐pair molecules within an ultrafast fiber laser by means of a direct measurement of the relative optical pulse separation with sub‐femtosecond precision in real time. Moreover, it demonstrates an all‐optical control of the chaotic dynamics followed by the soliton molecule by injection of a modulated optical signal that resynchronizes the internal periodic vibration of the soliton molecule. The fast error‐free switching between ordered and chaotic soliton molecules enabled by pump current sweeping and external injection highlights the potential prospects of all‐optical logic gates and chaotic communication using soliton molecules.
Funder
National Natural Science Foundation of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
6 articles.
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