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

Softcover Nachdruck of the original 1. Auflage 2016
ISBN: 978-3-319-80426-2
Verlag: Springer

Buch, Englisch, 88 Seiten, Previously published in hardcover, Format (B × H): 155 mm x 235 mm, Gewicht: 1883 g

Reihe: Springer Theses

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.

Zielgruppe

Research

Autoren/Hrsg.

Denkova, Denitza

Fachgebiete

• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Materialwissenschaft: Biomaterialien, Nanomaterialien, Kohlenstoff
• Naturwissenschaften Physik Thermodynamik Festkörperphysik, Kondensierte Materie
• Technische Wissenschaften Maschinenbau | Werkstoffkunde Technische Mechanik | Werkstoffkunde Materialwissenschaft: Elektronik, Optik
• Technische Wissenschaften Sonstige Technologien | Angewandte Technik Angewandte Optik
• Technische Wissenschaften Technik Allgemein Nanotechnologie
• Technische Wissenschaften Technik Allgemein Technische Optik, Lasertechnologie

Inhaltsverzeichnis

Introduction.- Imaging the Magnetic Near-?eld 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.

Über Autor(innen)

Denitza Denkova completed her Bachelor (2008) and Master (2010) studies in Physics at Sofia University, Bulgaria. During her studies she also worked part-time as an engineer at Melexis, a microelectronics company. In a joint project between these institutions she studied specific malfunctions in microelectronics circuits via various structural, optical and electrical characterization techniques, including the development of a cathodoluminescence add-on to a scanning electron microscope. Denitza then moved to KU Leuven, Belgium to further develop her interest in nanoscale characterization as a PhD. There she developed and applied a novel approach for imaging the magnetic field of light with nanoscale resolution, in the context of characterization of plasmonic and metamaterial devices.