Absorption and Extinction Cross Sections and Photon Streamlines in the Optical Near-field

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Original languageEnglish
Article number15420
Pages (from-to)15420
Number of pages1
JournalScientific reports
Volume7
Issue number1
Publication statusPublished - 1 Dec 2017

Abstract

The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave electromagnetic field. We analyze absorption, scattering and extinction for this system by the energy flow, visualized as streamlines of the Poynting vector. Depending on the dissipative damping of the oscillator, a part of the streamlines ends up in the dipole. Based on a graphical investigation of the streamlines, this represents the absorption cross section, and forms a far-field absorption aperture. In the near-field of the oscillator, a modification of the aperture is observed. As in the case for a linear dipole, we model the energy flow and derive the effective absorption apertures for an oscillator with a circular dipole characteristics - such as an atom in free space.

Keywords

    Light-matter interaction, Scattering, Absorption, Extinction

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Absorption and Extinction Cross Sections and Photon Streamlines in the Optical Near-field. / Striebel, Moritz; Wrachtrup, Jörg; Gerhardt, Ilja.
In: Scientific reports, Vol. 7, No. 1, 15420, 01.12.2017, p. 15420.

Research output: Contribution to journalArticleResearchpeer review

Striebel M, Wrachtrup J, Gerhardt I. Absorption and Extinction Cross Sections and Photon Streamlines in the Optical Near-field. Scientific reports. 2017 Dec 1;7(1):15420. 15420. doi: 10.1038/s41598-017-15528-w
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abstract = "The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave electromagnetic field. We analyze absorption, scattering and extinction for this system by the energy flow, visualized as streamlines of the Poynting vector. Depending on the dissipative damping of the oscillator, a part of the streamlines ends up in the dipole. Based on a graphical investigation of the streamlines, this represents the absorption cross section, and forms a far-field absorption aperture. In the near-field of the oscillator, a modification of the aperture is observed. As in the case for a linear dipole, we model the energy flow and derive the effective absorption apertures for an oscillator with a circular dipole characteristics - such as an atom in free space.",
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AU - Striebel, Moritz

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AU - Gerhardt, Ilja

N1 - Funding information: I.G. acknowledges the discussions with G. Wrigge and G. Zumofen (ETH Zürich) regarding this topic. Jeff Young (UBC Vancouver) is acknowledged for his support and insights. We acknowledge funding from the Max Planck-UBC quantum materials center, the Max Planck Society (J.W., Max Planck fellowship), and the EU via the project SIQS.

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N2 - The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave electromagnetic field. We analyze absorption, scattering and extinction for this system by the energy flow, visualized as streamlines of the Poynting vector. Depending on the dissipative damping of the oscillator, a part of the streamlines ends up in the dipole. Based on a graphical investigation of the streamlines, this represents the absorption cross section, and forms a far-field absorption aperture. In the near-field of the oscillator, a modification of the aperture is observed. As in the case for a linear dipole, we model the energy flow and derive the effective absorption apertures for an oscillator with a circular dipole characteristics - such as an atom in free space.

AB - The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave electromagnetic field. We analyze absorption, scattering and extinction for this system by the energy flow, visualized as streamlines of the Poynting vector. Depending on the dissipative damping of the oscillator, a part of the streamlines ends up in the dipole. Based on a graphical investigation of the streamlines, this represents the absorption cross section, and forms a far-field absorption aperture. In the near-field of the oscillator, a modification of the aperture is observed. As in the case for a linear dipole, we model the energy flow and derive the effective absorption apertures for an oscillator with a circular dipole characteristics - such as an atom in free space.

KW - Light-matter interaction

KW - Scattering

KW - Absorption

KW - Extinction

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