Unidirectional wave vector manipulation in two-dimensional space with an all passive acoustic parity-time-symmetric metamaterials crystal
Exploring the concept of non-Hermitian Hamiltonians respecting parity-time symmetry with
classical wave systems is of great interest as it enables the experimental investigation of …
classical wave systems is of great interest as it enables the experimental investigation of …
Machine learning for knowledge acquisition and accelerated inverse-design for non-Hermitian systems
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 …
flexibly manipulated by redistribution of the real and imaginary parts of refractive indices …
Revisit the Poynting vector in P T-symmetric coupled waveguides
XZ Zhang, RZ Luo, J Chen - Optics Express, 2022 - opg.optica.org
We show that the time-averaged Poynting vector of S?= E?× H?^∗/2 in parity-time (PT)
symmetric coupled waveguides is always positive and cannot explain the stopped light at …
symmetric coupled waveguides is always positive and cannot explain the stopped light at …
Non-Hermitian arrangement for stable semiconductor laser arrays
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 …
spatiotemporal dynamics in arrays (bars) of broad area laser diodes taking advantage of the …
[HTML][HTML] Non-Hermitian control of optical turbulence in systems with fractional dispersion
We show an efficient mechanism to control optical turbulence in systems with different
dispersion laws, including parabolic, sub-diffractive, hyper-diffractive or general fractional …
dispersion laws, including parabolic, sub-diffractive, hyper-diffractive or general fractional …
Stabilization of broad-area semiconductor laser sources by simultaneous index and pump modulations
We show that the emission of broad-area semiconductor amplifiers and lasers can be
efficiently stabilized by introducing two-dimensional periodic modulations simultaneously on …
efficiently stabilized by introducing two-dimensional periodic modulations simultaneously on …
Directionality fields generated by a local Hilbert transform
We propose an approach based on a local Hilbert transform to design non-Hermitian
potentials generating arbitrary vector fields of directionality, p ⃗ (r ⃗), with desired shapes …
potentials generating arbitrary vector fields of directionality, p ⃗ (r ⃗), with desired shapes …
Stabilized narrow-beam emission from broad-area semiconductor lasers
We provide a feasible and compact scheme to control and stabilize the spatiotemporal
dynamics of broad-area semiconductor (BAS) lasers. The proposal is based on the ability of …
dynamics of broad-area semiconductor (BAS) lasers. The proposal is based on the ability of …
[HTML][HTML] Enhanced acoustic pressure sensors based on coherent perfect absorber-laser effect
Lasing is a well-established field in optics with several applications. Yet, having lasing or
huge amplification in other wave systems remains an elusive goal. Here, we utilize the …
huge amplification in other wave systems remains an elusive goal. Here, we utilize the …
Regularization of vertical-cavity surface-emitting laser emission by periodic non-Hermitian potentials
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 …
efficiently control the complex spatial dynamics of broad-area lasers, particularly in vertical …