Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale
Name
Boriskina_Ch12.pdf
Description
Book chapter
Size
2.32 MB
Format
Adobe PDF
Checksum (MD5)
fe7ac5d9a302f6aacdbd3fa4f416705d
Author(s)
Boriskina, Svetlana V.
Date Issued
2013
Journal
Plasmonics: Theory and Applications
Publisher
Springer-Verlag
Citation
Boriskina, Svetlana V. “Plasmonics with a Twist: Taming Optical Tornadoes on the Nanoscale.” Plasmonics: Theory and Applications (2013): 431–461.
Version
Author's final manuscript
Abstract
This chapter discusses a hydrodynamics-inspired approach to trap and manipulate light in plasmonic nanostructures, which is based on steering optical powerflow around nano-obstacles. New insights into plasmonic nanofocusing mechanisms are obtained by invoking an analogy of the ‘photon fluid’ (PF). By proper nanostructure design, PF kinetic energy can be locally increased via convective acceleration and then converted into ‘pressure’ energy to generate localized areas of high field intensity. In particular, trapped light can be molded into optical vortices–tornado-like areas of circular motion of power flux–connected into transmission-like sequences. In the electromagnetic theory terms, this approach is based on radiationless electromagnetic interference of evanescent fields rather than on interference of propagating waves radiated by the dipoles induced in nanoparticles. The resulting ability to manipulate optical powerflow well beyond the diffraction limit helps to reduce dissipative losses, to increase the amount of energy accumulated within a nanoscale volume, and to activate magnetic response in non-magnetic nanostructures. It also forms a basis for long-range on-chip energy transfer/routing as well as for active nanoscale field modulation and switching.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/978-94-007-7805-4_12
