Real-Time Observation of Internal Motion within Ultrafast Dissipative Optical Soliton Molecules

Real-time access to the internal ultrafast dynamics of complex dissipative optical systems opens new explorations of pulse-pulse interactions and dynamic patterns. We present the first direct experimental evidence of the internal motion of a dissipative optical soliton molecule generated in a passively mode-locked erbium-doped fiber laser. We map the internal motion of a soliton pair molecule by using a dispersive Fourier-transform imaging technique, revealing different categories of internal pulsations, including vibrationlike and phase drifting dynamics. Our experiments agree well with numerical predictions and bring insights to the analogy between self-organized states of lights and states of the matter.Received 5 February 2017DOI:https://doi.org/10.1103/PhysRevLett.118.243901© 2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasOptical solitonsUltrafast phenomenaPhysical SystemsFiber lasersAtomic, Molecular & Optical