Scattering properties of a PT dipole

Abstract

Electromagnetic response of PT-dipole is studied both analytically and numerically. In analytical approach, dipole is represented by two point scatterers. Within the first Born approximation, the asymmetry of the scattering field with respect to the orientation of dipole is proven. In numerical simulations, dipole is represented by two infinitely long, parallel cylinders with opposite sign of imaginary part of refractive index. Numerical data confirm the validity of the Born approximation in the weak scattering limit, while significant deviations from the Born approximation were observed for stronger scatterers and in the near-field range.

References in corpus (10)

• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• Making Sense of Non-Hermitian Hamiltonians
• Unidirectional Invisibility induced by PT-Symmetric Periodic Structures
• Loss-induced suppression and revival of lasing
• PT-symmetric laser-absorber
• Reversing the Pump-Dependence of a Laser at an Exceptional Point
• Physical realization of $\mathcal{P}\mathcal{T}$-symmetric potential scattering in a planar slab waveguide
• Parity-Time Symmetric Coupled Microresonators with a Dispersive Gain/Loss
• Fano resonances and band structure of two dimensional photonic structures
• Localized Single Frequency Lasing States in a Finite Parity-Time Symmetric Resonator Chain

Cited by in corpus (2)

• Light scattering from stationary $\mathcal{P}\mathcal{T}$-symmetric collections of particles
• Resonant scattering of two-dimensional honeycomb PT dipole structure