Directional scattering from particles under evanescent wave illumination: the role of reactive power

Lei Wei; Michela Picardi; Jack Jamie Kingsley-Smith; Anatoly Zayats; Francisco Jose Rodriguez Fortuno

doi:10.1364/OL.43.003393

Directional scattering from particles under evanescent wave illumination: the role of reactive power

Lei Wei, Michela Picardi, Jack Jamie Kingsley-Smith, Anatoly Zayats, Francisco Jose Rodriguez Fortuno

Research output: Contribution to journal › Letter › peer-review

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Abstract

Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light via its polarization, is not only important at the fundamental level but also has significant implications for functional photonic applications that require active tuning of directional light propagation. Many of the experimental demonstrations have been attributed to the spin-momentum locking characteristic of evanescent waves. In this letter, we show another property of evanescent waves: the polarization dependent direction of the imaginary part of the Poynting vector, i.e. reactive power. Based on this property, we propose a simple and robust way to tune the directional far-field scattering from nanoparticles near a surface under evanescent wave illumination by controlling its polarization and direction of the incident light.

Original language	English
Pages (from-to)	3393-3396
Journal	Optics Letters
Volume	43
Issue number	14
DOIs	https://doi.org/10.1364/OL.43.003393
Publication status	Published - 12 Jul 2018

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title = "Directional scattering from particles under evanescent wave illumination: the role of reactive power",

abstract = "Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light via its polarization, is not only important at the fundamental level but also has significant implications for functional photonic applications that require active tuning of directional light propagation. Many of the experimental demonstrations have been attributed to the spin-momentum locking characteristic of evanescent waves. In this letter, we show another property of evanescent waves: the polarization dependent direction of the imaginary part of the Poynting vector, i.e. reactive power. Based on this property, we propose a simple and robust way to tune the directional far-field scattering from nanoparticles near a surface under evanescent wave illumination by controlling its polarization and direction of the incident light.",

author = "Lei Wei and Michela Picardi and Kingsley-Smith, {Jack Jamie} and Anatoly Zayats and {Rodriguez Fortuno}, {Francisco Jose}",

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T1 - Directional scattering from particles under evanescent wave illumination

T2 - the role of reactive power

AU - Wei, Lei

AU - Picardi, Michela

AU - Kingsley-Smith, Jack Jamie

AU - Zayats, Anatoly

AU - Rodriguez Fortuno, Francisco Jose

PY - 2018/7/12

Y1 - 2018/7/12

N2 - Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light via its polarization, is not only important at the fundamental level but also has significant implications for functional photonic applications that require active tuning of directional light propagation. Many of the experimental demonstrations have been attributed to the spin-momentum locking characteristic of evanescent waves. In this letter, we show another property of evanescent waves: the polarization dependent direction of the imaginary part of the Poynting vector, i.e. reactive power. Based on this property, we propose a simple and robust way to tune the directional far-field scattering from nanoparticles near a surface under evanescent wave illumination by controlling its polarization and direction of the incident light.

AB - Study of photonic spin-orbital interactions, which involves control of the propagation and spatial distributions of light via its polarization, is not only important at the fundamental level but also has significant implications for functional photonic applications that require active tuning of directional light propagation. Many of the experimental demonstrations have been attributed to the spin-momentum locking characteristic of evanescent waves. In this letter, we show another property of evanescent waves: the polarization dependent direction of the imaginary part of the Poynting vector, i.e. reactive power. Based on this property, we propose a simple and robust way to tune the directional far-field scattering from nanoparticles near a surface under evanescent wave illumination by controlling its polarization and direction of the incident light.

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DO - 10.1364/OL.43.003393

M3 - Letter

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VL - 43

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EP - 3396

JO - Optics Letters

JF - Optics Letters

IS - 14

ER -

Directional scattering from particles under evanescent wave illumination: the role of reactive power

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