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oai:gupea.ub.gu.se:2077/532382017-08-25T01:32:29Zcom_2077_17602com_2077_4716com_2077_10556col_2077_17603col_2077_10557

Zubritskaya, Irina 2017-08-24T08:40:06Z 2017-08-24T08:40:06Z 2017-08-24 ISBN 978-91-629-0255-1 http://hdl.handle.net/2077/53238 Materials that provide real-time control of the fundamental properties of light at visible and near-infrared frequencies enable the essential components for future optical devices. Metal nanostructures that couple electromagnetic (EM) radiation on a sub-wavelength length scale to free electrons, forming propagating or localized surface plasmons, provide many exciting functionalities due to their ability to manipulate light via the local EM field shaping and enhancement. Magnetoplasmonics is an emerging field within nano-optics that operates with the combination of propagating or localized surface plasmons and magnetism. Active and adaptive magnetoplasmonic components capable of controlling light on the nanoscale with externally applied magnetic fields are envisioned to push the development of integrated photonic circuits, high-density data storage, or the advanced schemes for bio- and chemo-sensing. In these components plasmon-enhanced and controlled magneto-optical activity creates a new way of control for plasmonic devices, which is explored in this thesis. Another focus of this thesis are chiral plasmonic materials that exhibit an enhanced chiroptical response due to the nanoconfinement of light and strong near-field coupling. These have benefits in applications like chiral sensing. Fundamentally, they offer an additional degree of freedom to control the phase and polarization of light on the sub-wavelength scale via interaction with its helicity, i.e., angular momentum. Adaptive chiral materials provide a new pathway for real-time control of chiral light’s scattering and absorption by weak magnetic fields. Engineering of chiral materials that can manipulate the helicity of light is decisive for angular momentum-controlled nanophotonics. A general topic of this thesis is the design and fabrication of advanced optical nanoantennas, used to dynamically manipulate light. Among applications are nanorulers, adaptive magneto-chiral and highly transparent magneto-dielectric surfaces. eng 1. Magnetoplasmonic design rules for active magneto-optics. Lodewijks, K.; Maccaferri, N.; Pakizeh, T.; Dumas, R. K.; Zubritskaya, I.; Akerman, J.; Vavassori, P.; Dmitriev, A. Nano Letters 2014, 14, (12), 7207-14. ::doi::10.1021/nl504166n 2. Active magnetoplasmonic ruler. Zubritskaya, I.; Lodewijks, K.; Maccaferri, N.; Mekonnen, A.; Dumas, R. K.; Åkerman, J.; Vavassori, P.; Dmitriev, A. Nano Letters 2015, 15, (5), 3204-11. ::doi::10.1021/acs.nanolett.5b00372 3. Magnetic control of the chiroptical plasmonic surfaces. Zubritskaya, I; Maccaferri, N; Inchausti Ezeiza, X; Vavassori, P; and Dmitriev, A. 4. Transparent chiroptical magneto-dielectric surfaces. Zubritskaya, I; Maccaferri, N; Pedrueza Villialmanzo, E; Lumdee, C; Vavassori, P; and Dmitriev, A. photonics magnetoplasmonics magneto-optics magneto-optical Kerr effect (MOKE) plasmon ruler nickel cobalt gold silicon localized surface plasmon resonance dimer trimer chiroptics chiral transmission 2D nanoantennas dynamic tuning metal-dielectric 3D nanoantennas metasurface magnetic modulation perpendicular magnetic anisotropy Designer magnetoplasmonics for adaptive nano-optics Text Doctoral thesis Doctor of Philosophy irina.zubritskaya@physics.gu.se Göteborgs universitet. Naturvetenskapliga fakulteten Department of Physics ; Institutionen för fysik Fredagen den 15 september, kl. 10.00, PJ salen, Institutionen för fysik, Origovägen 6 B, 412 96 Göteborg 2017-09-15 MNF open.access