Chiral Electromagnetic Fields Generated by Arrays of Nanoslits

Hendry, Euan; Mikhaylovskiy, R. V.; Barron, Laurence D.; Kadodwala, Malcolm; Davis, Timothy J.

doi:10.1021/nl3012787

Cited by 181 publications

(194 citation statements)

References 22 publications

Supporting

Mentioning

189

Contrasting

Order By: Relevance

“…This might be achieved, for example, by best-fitting the dispersion curve to a suitable line-shape function, running the residuals into a log-log plot against wavelength, and recognizing a -4 gradient. A similar effect could also, in principle, arise spate of publications [28][29][30][31] has shown, curious anomalies can arise with circularly polarized light, in the vicinity of a mirror upon which it has normal incidence. As a result of the superposition of forward and backward propagating light, the relative strengths of the electric and magnetic fields are then found to vary over distance, within the space of a wavelength.…”

Section: Discussionmentioning

confidence: 84%

Identifying diamagnetic interactions in scattering and nonlinear optics

Forbes

Andrews

2016

Phys. Rev. A

View full text Add to dashboard Cite

In the generic formulation of optical interactions there is, beyond the familiar electric and magnetic multipolar forms of coupling, an additional diamagnetization term that rarely receives attention. In fact it can give rise to effects that should be observable in the general context of nonlinear optical spectroscopy, as well as scattering. A quantum electrodynamical analysis reveals features of special interest in two specific cases: two-photon absorption and Rayleigh scattering. Diamagnetic contributions are seen to be dispersion free with regards to the frequency of input radiation, and can represent unique interactions within optical absorption and emission processes. There is also a configuration in which diamagnetic couplings, which are quadratic in the magnetic field, can supersede those that are dependent linearly on the electric field strength, such as the electric dipole. In this connection the influence of retroreflected circularly polarized light, which leads to a local distance dependence in magnitude of the electromagnetic fields, produces conditions in which the diamagnetization response can become a prominent feature in two-photon absorption.

show abstract

Section: Discussionmentioning

confidence: 84%

Identifying diamagnetic interactions in scattering and nonlinear optics

Forbes

Andrews

2016

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…[28,29,30] This effect may allow developing new sensing strategies by making use of the magnetic field modulation of the chirality (C) of the electromagnetic (EM) field (socalled optical chirality) in this kind of systems. The local optical chirality, C(r), is given by ( ) = − 0 2 0 ( * ( ) ⋅ ( )), [31,32,33,34,35] where ω is the frequency of the EM field, E(r) and B(r) are the electric and magnetic components of the EM field at r, and C0 is a normalization constant corresponding to the modulus of the optical chirality for a left (right) circular polarized wave propagating in vacuum…”

Section: Resultsmentioning

confidence: 99%

Magnetic field modulation of chirooptical effects in magnetoplasmonic structures

et al. 2014

View full text Add to dashboard Cite

In this work we analyse the magnetic field effects on the chirooptical properties of nm has a larger chirooptical response than the resonance at 650 nm, which, on the other hand, exhibits a larger magnetic field modulation of its chirooptical response.This dissimilar behaviour is due to the different physical origin of the chirooptical and magneto-optical responses. Whereas the chirooptical effects are due to the geometry of the structures, the magneto-optical response is related to the intensity of the electromagnetic field in the magnetic (Co) layers. We also show that the optical chirality can be modulated by the applied magnetic field, which suggests

show abstract

“…Second, these components must not be in phase. Recently, Hendry et al demonstrated a very simple design where a lateral shift between two slits in a metallic film ensures the required relations between the electric and magnetic near-fields of the single slits [46]. This arrangement leads to planar geometrical chirality, and its handedness determines the handedness of the chiral fields.…”

Section: Introductionmentioning

confidence: 99%

Formation of chiral fields in a symmetric environment

Schäferling¹,

Yin²,

Gießen³

2012

Opt. Express

162

194

View full text Add to dashboard Cite

Abstract:Chiral fields, i. e., electromagnetic fields with nonvanishing optical chirality, can occur next to symmetric nanostructures without geometrical chirality illuminated with linearly polarized light at normal incidence. A simple dipole model is utilized to explain this behavior theoretically. Illuminated with circularly polarized light, the chiral near-fields are still dominated by the distributions found for the linear polarization but show additional features due to the optical chirality of the incident light. Rotating the angle of linear polarization introduces more subtle changes to the distribution of optical chirality. Using our findings, we propose a novel scheme to obtain chiroptical far-field response using linearly polarized light, which could be utilized for applications such as optical enantiomer sensing.

show abstract

Chiral Electromagnetic Fields Generated by Arrays of Nanoslits

Cited by 181 publications

References 22 publications

Identifying diamagnetic interactions in scattering and nonlinear optics

Identifying diamagnetic interactions in scattering and nonlinear optics

Magnetic field modulation of chirooptical effects in magnetoplasmonic structures

Formation of chiral fields in a symmetric environment

Contact Info

Product

Resources

About