Stabilized Bright Narrow Beams from Edge-Emitting Lasers

We present new edge-emitting laser configurations to improve the laser performance with a double benefit, light localization into a bright narrow beam emission and the suppression of spatiotemporal dynamics. The proposal is based on the management of the transverse light flow inside the laser cavity through non-Hermitian potentials. We impose pump and refractive index modulations to generate a local PT-symmetric configuration with a central symmetry axis. Such configuration induces the accumulation in axis of light generated in the whole active layer. The exploration of the modulation parameters shows a significant improvement of the intensity concentration, stability and brightness of the emitted beam.