Athanasios Gavrielides

TL;DR: A single lasing mode driven by a three-level ''quantum-beat'' atomic configuration can show gain without population inversion or optical absorption into an excited state without spontaneous or stimulated emission.

TL;DR: Injection locking of a semiconductor laser can significantly improve the broadband modulation characteristics as mentioned in this paper, by adjusting the frequency offset between the master laser and the slave laser, improved modulation bandwidth or flatness of the modulation response can be emphasized.

TL;DR: In this paper, the authors give experimental and numerical evidence for a new dynamical regime in the operation of semiconductor lasers subject to delayed optical feedback occurring for short delay times, and demonstrate that these regular pulse packages correspond to trajectories moving on global orbits comprising several destabilized fixed points within the complicated phase space structure of this delay system.

TL;DR: In this paper, the authors characterized the nonlinear dynamics of a semiconductor laser subject to optical injection, and the key characteristics of measured optical spectra were reproduced in calculations based on a single-mode model that includes spontaneous-emission noise.

TL;DR: By varying the external cavity phase, this work finds a cyclic scenario leading from stable intensity emission via periodic behavior to regular and irregular pulse packages, and finally back to stable emission.