Optical chimera in light polarization

Abstract

Light polarization is an inherent property of the coherent laser output that finds applications, for example, in vision, imaging, spectroscopy, cosmology, and communications. We report here on light polarization dynamics that repeatedly switches between a stationary state of polarization and an irregularly pulsating polarization. The reported dynamics is found to result from the onset of chimeras. Chimeras in nonlinear science refer to the counterintuitive coexistence of coherent and incoherent dynamics in an initially homogeneous network of coupled nonlinear oscillators. The existence of chimera states has been evidenced only recently in carefully designed experiments using either mechanical, optomechanical, electrical, or optical oscillators. Interestingly, the chimeras reported here originate from the inherent coherent properties of a commercial laser diode. The spatial and temporal properties of the chimeras found in light polarization are controlled by the laser diode and feedback parameters, leading, e.g., to multistability between chimeras with multiple heads and to turbulent chimeras.

Spatiotemporal complexity of chaos in a phase-conjugate feedback laser system

“…It is known as a virtual spatiotemporal plot in which the timedelay plays a role analog to a virtual spatial coordinate and the dynamics within one time-delay span is followed as time evolves in units of the time-delay [23]. Such spatio-temporal analogy of the time-delayed laser dynamics has been exploited extensively within the context of the emergence of dissipative spatial solitons [24] or also the study of collective disordered dynamics in otherwise synchronized networks of spatially extended oscillators -also called chimeras [25,26]. Figure 3(a) is produced by dividing the 455.05 ns long time-series into continuous subsets corresponding to the cavity round-trip time.…”

Chimera state in coupled map lattice of matrices

“…Hibridinės būsenos, pavadintos chimeromis, siejamos su įvairiomis realiame pasaulyje aptinkamomis sistemomis. Chimerų būsenos spontaniškai atsiranda susietų šviesai jautrių cheminių osciliatorių tinkle [7], optinių ar optomechaninių osciliatorių tinkluose [11], elektros grandinėje [2], medicinoje -tiek neurologijoje [10], tiek širdies dinamiką tiriančiose srityse [13].…”

Robust universal approach to identify travelling chimeras and synchronized clusters in spiking networks

“…Since their recent dyscovery [2] they have been identified in multiple systems, such as phase oscillator networks (e.g. [3]), the Stuart-Landau systems [4,5], and found experimentally in multiple systems [6][7][8][9][10][11]. Studies of chimera states in the neuronal networks, despite their interest for computational functional importance, are rapidly developing yet are less numerous ( [12]).…”