Consequences of nonreciprocity in reflection from a truncated spatial Kramers–Kronig medium

@article{Saha2016ConsequencesON,
  title={Consequences of nonreciprocity in reflection from a truncated spatial Kramers–Kronig medium},
  author={Sudipta Saha and K. S. Sai and Nirmalya Ghosh and Subhasish Dutta Gupta},
  journal={Journal of Optics},
  year={2016},
  volume={19}
}
We study the truncated Kramers–Kronig (KK) medium to reveal the effects of nonreciprocity in reflection on the scattering and the wave guiding properties. We focus on the simplest possible spatial profile mimicking the dielectric response. We show that a finite slab of KK medium can support only one sided null scattering under bidirectional identical illumination. However, for a phase lag between the two incident beams it is possible to have null scattering on the other side. This is shown to… 

Spatial Kramers-Kronig relation and unidirectional light reflection induced by Rydberg dipole-dipole interactions

Kramers-Kronig (KK) relation between the dispersion and absorption responses of a signal field can be mapped from the frequency domain into the space domain via the dipole-dipole interactions between

Designing Spatial Kramers–Kronig Media Using Transformation Optics

Spatial Kramers–Kronig (KK) relations have been recently proposed to achieve perfect absorption without using any gain elements or highly anisotropic materials. However, such perfect absorption is

References

SHOWING 1-10 OF 36 REFERENCES

Wave reflection in dielectric media obeying spatial Kramers-Kronig relations

In a recent work, Horsley and coworkers (Nat. Photon., 9 (2015) 436) showed rather interestingly that planar dielectric media, for which the real and imaginary parts of the dielectric permittivity

Spatial Kramers–Kronig relations and the reflection of waves

Kramers–Kronig theory points to a new way of designing perfect anti-reflection surfaces. When a planar dielectric medium has a permittivity profile that is an analytic function in the upper or lower

Invisibility in $\mathcal {PT}$-symmetric complex crystals

Bragg scattering in sinusoidal -symmetric complex crystals of finite thickness is theoretically investigated by the derivation of exact analytical expressions for reflection and transmission

Bidirectional invisibility in Kramers-Kronig optical media.

A broad class of planar dielectric media with complex permittivity profiles that are fully invisible, for both left and right incidence sides, is introduced and the transition from unidirectional to bidirectional invisibility, and the possibility to realize sharp reflection above a cut-off incidence angle, are discussed.

Study of asymmetric multilayered structures by means of nonreciprocity in phases

We study symmetric and asymmetric stratified media with resonant absorbers to bring out the role of inversion symmetry and absorption. We show that both can be probed using the reflected fields for

Coherent perfect absorption mediated enhancement of transverse spin in a gap plasmon guide

We consider a symmetric gap plasmon guide (a folded Kretschmann configuration) supporting both symmetric and antisymmetric coupled surface plasmons. We calculate the transverse spin under

Experimental demonstration of a unidirectional reflectionless parity-time metamaterial at optical frequencies.

The demonstrated unidirectional phenomenon at the corresponding parity-time exceptional point on-a-chip confirms the feasibility of creating complicated on-chip parity- time metamaterials and optical devices based on their properties.

Reciprocity in optics

The application of reciprocity principles in optics has a long history that goes back to Stokes, Lorentz, Helmholtz and others. Moreover, optical applications need to be seen in the context of

Half-spectral unidirectional invisibility in non-Hermitian periodic optical structures.

The phenomenon of half-spectral unidirectional invisibility is introduced for one-dimensional periodic optical structures with tailored real and imaginary refractive index distributions in a non

Reflectionless eigenstates of the sech2 potential

The one-dimensional potential well V(x)=−(ℏ2ν(ν+1)∕2ma2)sech2(x∕a) does not reflect waves of any energy when ν is a positive integer. We show that in this reflectionless case the solutions of