5 papers
Non-Hermitian arrangement for stable semiconductor laser arrays
J. Medina Pardell, R. Herrero, M. Botey +1
We propose and explore a physical mechanism for the stabilization of the complex spatiotemporal dynamics in arrays (bars) of broad area laser diodes taking advantage of the symmetr…
Genetic optimization Invents non-Hermitian potentials for Asymmetric Reflectivity
W. W. Ahmed, R. Herrero, M. Botey +2
We propose a general design strategy based on genetic optimization to realize asymmetric reflectivity in periodic and non-periodic planar structures containing dielectric and gain-…
Restricted Hilbert transform for non-Hermitian management of fields
W. W. Ahmed, R. Herrero, M. Botey +2
Non-Hermitian systems exploiting the synergy between gain and loss have recently become the focus of interest to discover novel physical phenomena. The spatial symmetry breaking in…
Regularization of Vertical-Cavity Surface-Emitting Lasers emission by periodic non-Hermitian potentials
W. W. Ahmed, R. Herrero, M. Botey +2
We propose a novel physical mechanism based on periodic non-Hermitian potentials to efficiently control the complex spatial dynamics of broad-area lasers, particularly in Vertical-…
Stabilization of Broad Area Semiconductor Laser sources by simultaneous index and pump modulations
W. W. Ahmed, S. Kumar, J. Medina +3
We show that the emission of broad area semiconductor amplifiers and lasers can be efficiently stabilized by introducing, two-dimensional periodic modulations simultaneously on bot…