Controlling Voigt waves by the Pockels effect

Mackay, Tom G.

doi:10.1117/1.jnp.9.093599

Cited by 9 publications

(9 citation statements)

References 26 publications

(34 reference statements)

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“…Indeed, in the limit ǫ hcm → 0 − , the critical angle θ c → π/2 and the derivative dθ c /dn b becomes unbounded. However, [33,34,35,36,37], Voigt waves [38,39], as well as generic porous dielectric materials [40]. We note that the issue of relatively large losses that arises in the parameter regime where Re ǫ hcm ≈ 0 could, in principle, be addressed by the use of active component materials [41].…”

Section: Discussionmentioning

confidence: 99%

Toward optical sensing with hyperbolic metamaterials

Mackay

2015

Opt. Eng

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A possible means of optical sensing, based on a porous hyperbolic material that is infiltrated by a fluid containing an analyte to be sensed, was theoretically investigated. The sensing mechanism relies on the observation that extraordinary plane waves propagate in the infiltrated hyperbolic material only in directions enclosed by a cone aligned with the optic axis of the infiltrated hyperbolic material. The angle this cone subtends to the plane perpendicular to the optic axis is θ c . The sensitivity of θ c to changes in the refractive index of the infiltrating fluid, namely n b , was explored; also considered were the permittivity parameters and porosity of the hyperbolic material, as well as the shape and size of its pores. Sensitivity was gauged by the derivative dθ c ∕dn b . In parametric numerical studies, values of dθ c ∕dn b in excess of 500 deg per refractive index unit were computed, depending upon the constitutive parameters of the porous hyperbolic material and infiltrating fluid and the nature of the porosity. In particular, it was observed that exceeding large values of dθ c ∕dn b could be attained as the negative-valued eigenvalue of the infiltrated hyperbolic material approached zero. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering Optical Engineering 067102-3 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 067102-8 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 067102-9 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Section: Discussionmentioning

confidence: 99%

Toward optical sensing with hyperbolic metamaterials

Mackay

2015

Opt. Eng

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“…The observable consequences of this non-semisimple degeneracy were experimentally demonstrated by Voigt in 1902 [10] and theoretically explained by Pancharatnam in 1958 [11]. A plane wave characterized by a non-semisimple degeneracy of [ P ] is called a Voigt wave [12,13], its occurrence showing up in the band diagram as an exceptional point [14,15]. These exceptional points can arise only if the medium of propagation is either dissipative or active [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…These surface waves arise from the non-semisimple degeneracy of either [ P A ] or [P B ] but not of both. Notably, the existence of exceptional surface waves can be supported by nondissipative (and inactive) mediums, unlike the Voigt waves [7][8][9][10][11][12][13] that are their plane-wave cousins.…”

Section: Introductionmentioning

confidence: 99%

From unexceptional to doubly exceptional surface waves

Lakhtakia,

Mackay

2020

Preprint

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An exceptional surface wave can propagate in an isolated direction, when guided by the planar interface of two homogeneous dielectric partnering mediums of which at least one is anisotropic, provided that the constitutive parameters of the partnering mediums satisfy certain constraints. Exceptional surface waves are distinguished from unexceptional surface waves by their localization characteristics: the fields of an exceptional surface wave in the anisotropic partnering medium decay as a combined linear-exponential function of distance from the interface, whereas the decay is purely exponential for an unexceptional surface wave. If both partnering mediums are anisotropic then a doubly exceptional surface wave can exist for an isolated propagation direction. The decay of this wave in both partnering mediums is governed by a combined linear-exponential function of distance from the interface.

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“…More recently, the greater scope for realizing Voigt-wave propagation in more complex mediums [20,21], including bianisotropic [22] and non-homogeneous mediums [23], has been reported. In particular, through judicious design, engineered materials can be used to allow control over the directions for Voigt-wave propagation [24][25][26][27][28]. An essential requirement for Voigt-wave propagation is that the host anisotropic medium is either dissipative [16,19,29] or active [30]; but in the case of DV surface-wave propagation, as described in greater detail the following sections, the two partnering mediums are both non-dissipative and inactive.…”

Section: Introductionmentioning

confidence: 99%

Dyakonov–Voigt surface waves

2019

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Electromagnetic surface waves guided by the planar interface of an isotropic dielectric medium and a uniaxial dielectric medium, both non-dissipative, were considered, the optic axis of the uniaxial medium lying in the interface plane. Whereas this interface is known to support the propagation of Dyakonov surface waves when certain constraints are satisfied by the constitutive parameters of the two partnering mediums, we identified a different set of constraints that allow the propagation of surface waves of a new type. The fields of the new surface waves, named Dyakonov–Voigt (DV) surface waves, decay as the product of a linear and an exponential function of the distance from the interface in the anisotropic medium, whereas the fields of the Dyakonov surface waves decay only exponentially in the anisotropic medium. In contrast to Dyakonov surface waves, the wavenumber of a DV surface wave can be found analytically. Also, unlike Dyakonov surface waves, DV surface waves propagate only in one direction in each quadrant of the interface plane.

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Controlling Voigt waves by the Pockels effect

Cited by 9 publications

References 26 publications

Toward optical sensing with hyperbolic metamaterials

Toward optical sensing with hyperbolic metamaterials

From unexceptional to doubly exceptional surface waves

Dyakonov–Voigt surface waves

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