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Optical Characterization of Plasmonic Nanostructures: Near-Field Imaging of the Magnetic Field of Light

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Optical Characterization of Plasmonic Nanostructures: Near-Field Imaging of the Magnetic Field of Light/ by Denitza Denkova.
Author:	Denkova, Denitza.
Description:	XXVI, 88 p. 36 illus., 35 illus. in color.online resource. :
Contained By:	Springer Nature eBook
Subject:	Lasers. -
Online resource:	https://doi.org/10.1007/978-3-319-28793-5
ISBN:	9783319287935

Optical Characterization of Plasmonic Nanostructures: Near-Field Imaging of the Magnetic Field of Light
Denkova, Denitza.

Optical Characterization of Plasmonic Nanostructures: Near-Field Imaging of the Magnetic Field of Light[electronic resource] /by Denitza Denkova. - 1st ed. 2016. - XXVI, 88 p. 36 illus., 35 illus. in color.online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053. - Springer Theses, Recognizing Outstanding Ph.D. Research,.

Introduction -- Imaging the Magnetic Near-ﬁeld of Plasmon Modes in Bar Antennas -- A Near-Field-Aperture Probe as an Optical Magnetic Source and Detector -- Magnetic Near-Field Imaging of Increasingly Complex Plasmonic Antennas -- Plasmon-Enhanced Sub-wavelength Laser Ablation: Plasmonic Nano-Jets -- Conclusions and Outlook.

This thesis focuses on a means of obtaining, for the first time, full electromagnetic imaging of photonic nanostructures. The author also develops a unique practical simulation framework which is used to confirm the results. The development of innovative photonic devices and metamaterials with tailor-made functionalities depends critically on our capability to characterize them and understand the underlying light-matter interactions. Thus, imaging all components of the electromagnetic light field at nanoscale resolution is of paramount importance in this area. This challenge is answered by demonstrating experimentally that a hollow-pyramid aperture probe SNOM can directly image the horizontal magnetic field of light in simple plasmonic antennas – rod, disk and ring. These results are confirmed by numerical simulations, showing that the probe can be approximated, to first order, by a magnetic point-dipole source. This approximation substantially reduces the simulation time and complexity and facilitates the otherwise controversial interpretation of near-field images. The validated technique is used to study complex plasmonic antennas and to explore new opportunities for their engineering and characterization.

ISBN: 9783319287935

Standard No.: 10.1007/978-3-319-28793-5doiSubjects--Topical Terms:

557748
Lasers.

LC Class. No.: TA1671-1707

Dewey Class. No.: 621.36

Optical Characterization of Plasmonic Nanostructures: Near-Field Imaging of the Magnetic Field of Light
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520 $a This thesis focuses on a means of obtaining, for the first time, full electromagnetic imaging of photonic nanostructures. The author also develops a unique practical simulation framework which is used to confirm the results. The development of innovative photonic devices and metamaterials with tailor-made functionalities depends critically on our capability to characterize them and understand the underlying light-matter interactions. Thus, imaging all components of the electromagnetic light field at nanoscale resolution is of paramount importance in this area. This challenge is answered by demonstrating experimentally that a hollow-pyramid aperture probe SNOM can directly image the horizontal magnetic field of light in simple plasmonic antennas – rod, disk and ring. These results are confirmed by numerical simulations, showing that the probe can be approximated, to first order, by a magnetic point-dipole source. This approximation substantially reduces the simulation time and complexity and facilitates the otherwise controversial interpretation of near-field images. The validated technique is used to study complex plasmonic antennas and to explore new opportunities for their engineering and characterization.
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