75 citations · 153 across the 9 of their papers we have counts for
7 papers · 1 filter
Machine learning for knowledge acquisition and accelerated inverse-design for non-Hermitian systems
W. W. Ahmed, M. Farhat, K. Staliunas +2
Non-Hermitian systems offer new platforms for unusual physical properties that can be flexibly manipulated by redistribution of the real and imaginary parts of refractive indices,…
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…
Spatiotemporal stabilization proof of concept of Broad Area Semiconductor laser sources
J. Medina, W. W. Ahmed, S. Kumar +3
We provide a numerical proof of concept of a stabilization mechanism for BAS laser sources. The scheme is based on the simultaneous introduction of in-phase two-dimensional modulat…
Directionality Fields generated by a Local Hilbert Transform
W. W. Ahmed, R. Herrero, M. Botey +3
We propose a new approach based on a local Hilbert transform to design non-Hermitian potentials generating arbitrary vector fields of directionality, p(r), with desired shapes and…