Spatially dispersive finite-difference time-domain analysis of sub-wavelength imaging by the wire medium slabs

Zhao, Yan; Belov, Pavel A.; Hao, Yang

doi:10.1364/oe.14.005154

Cited by 23 publications

(21 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this case, as demonstrated in Ref. 18, because of the all-spatial-spectrum FP resonance, the multiwire endoscope does not produce any diffraction effects. The FP condition enhances the sensing properties, enables a nearly perfect transmission of the image, and guarantees the absence of strong reflections from the endoscope, which otherwise perturb the near field distribution of the source.…”

supporting

confidence: 51%

The importance of Fabry–Pérot resonance and the role of shielding in subwavelength imaging performance of multiwire endoscopes

Rahman

Belov

Silveirinha

et al. 2009

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

Multiwire endoscopes may enable the manipulation of the electromagnetic field in the subwavelength scale. Recently, two different configurations of such devices have been proposed. Here, we compare the imaging performance of the imaging device introduced by Belov et al. [Phys. Rev. B 73, 033108 (2006)] and by Silveirinha et al. [Phys. Rev. B 75, 035108 (2007)] with the shielded multiwire endoscope described by Shvets et al. [Phys. Rev. Lett. 99, 053903 (2007)]. It is demonstrated that the performance of the latter may be strongly affected by the presence of a metallic shield around the endoscope and by poor matching between the endoscope and free space. Our results show that the metallic shield is completely unnecessary and emphasize the importance of tuning the length of the wires according to the Fabry–Pérot resonance condition, as proposed by Belov et al. [Phys. Rev. B 73, 033108 (2006)].

show abstract

supporting

confidence: 51%

The importance of Fabry–Pérot resonance and the role of shielding in subwavelength imaging performance of multiwire endoscopes

Rahman

Belov

Silveirinha

et al. 2009

Applied Physics Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…where we defined , Let us now suppose that the plane 0 x = corresponds to an interface between two different materials, so that one of the materials occupies the semispace 0 x > , whereas the second material occupies the region 0 x < , and that the constitutive relation in both bulk materials is of the generic form of Eq. (2). Evidently, the coefficients 0 a , 2 a , and 0 b in general differ in the two materials.…”

Section: Introductionmentioning

confidence: 92%

“… (9). yields the correct constitutive relations both in the bulk metamaterial and in the bulk dielectric region (i.e in the region that surrounds the metamaterial body).…”

mentioning

confidence: 97%

Macroscopic electromagnetic response of arbitrarily shaped spatially dispersive bodies formed by metallic wires

Costa

Silveirinha

2012

Phys. Rev. B

View full text Add to dashboard Cite

In media with strong spatial dispersion the electric displacement vector and the electric field are typically linked by a partial differential equation in the bulk region. The objective of this work is to highlight that in the vicinity of an interface the relation between the macroscopic fields cannot be univocally determined from the bulk response of the involved materials, but requires instead the knowledge of internal degrees of freedom of the materials. We derive such a relation for the particular case of "wire media", and describe a numerical formalism that enables characterizing the electromagnetic response of arbitrarily shaped spatially dispersive bodies formed by arrays of crossed wires. The possibility of concentrating the electromagnetic field in a narrow spot by tapering a metamaterial waveguide is discussed.

show abstract

“…This can be explained by considering on phenomenological grounds the inclusions to cause either a response associated to free electrons, e.g. in a straight wire elements [11,12], or a response associated to a harmonic oscillator, e.g. in a small metallic or dielectric particle that is driven into a resonant optical response, in a split ring [13,14], or any other complicated inclusion that has been suggested in the past [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Surface plasmon polaritons sustained at the interface of a nonlocal metamaterial

et al. 2018

View full text Add to dashboard Cite

Studying basic physical effects sustained in metamaterials characterized by specific constitutive relation is a research topic with a long standing tradition. Besides intellectual curiosity, it derives its importance from the ability to predict observable phenomena that are, if found with an actual metamaterial, a clear indication on its properties. Here, we consider a nonlocal (strong spatial dispersion), lossy, and isotropic metamaterial and study the impact of the nonlocality on the dispersion relation of surface plasmon polaritons sustained at an interface between vacuum and such metamaterial. For that, Fresnel coefficients are calculated and appropriate surface plasmon polaritons existence conditions are being proposed. Predictions regarding the experimentally observable reflection from a frustrated internal reflection geometry are being made. A different behavior for TE and TM polarization is observed. Our work unlocks novel opportunities to seek for traces of the nonlocality in experiments made with nowadays metamaterials.

show abstract

Spatially dispersive finite-difference time-domain analysis of sub-wavelength imaging by the wire medium slabs

Cited by 23 publications

References 22 publications

The importance of Fabry–Pérot resonance and the role of shielding in subwavelength imaging performance of multiwire endoscopes

The importance of Fabry–Pérot resonance and the role of shielding in subwavelength imaging performance of multiwire endoscopes

Macroscopic electromagnetic response of arbitrarily shaped spatially dispersive bodies formed by metallic wires

Surface plasmon polaritons sustained at the interface of a nonlocal metamaterial

Contact Info

Product

Resources

About