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Topological photonic Su-Schrieffer-Heeger-type coupler
Nikolaos K. Efremidis
We examine the coupling process between the surface modes of a Su-Schrieffer-Heeger lattice both in the linear and the nonlinear regimes. We first develop a coupled-mode theory for…
Fundamental entropic processes in the theory of optical thermodynamics
Nikolaos K. Efremidis, Demetrios N. Christodoulides
We study the statistical behavior of multimoded optical systems under equilibrium conditions. We investigate the role of variations of the system parameters in the thermodynamic de…
Free-space Realization of Tunable Pin-like Optical Vortex Beams
Domenico Bongiovanni, Denghui Li, Michail Goutsoulas +6
We demonstrate, both analytically and experimentally, free-space pin-like optical vortex beams (POVBs).Such angular-momentum-carrying beams feature tunable peak intensity and under…
Dynamics of self-accelerating electron beams in a homogeneous magnetic field
Michael Goutsoulas, Nikolaos K. Efremidis
We examine the dynamics of electron beams that, in free space, are self-accelerating, in the presence of an additional magnetic field. We focus our attention in the case of Airy be…