Second-Harmonic Generation Imaging of Metal Nano-Objects with Cylindrical Vector Beams

We introduce an imaging technique based on second-harmonic generation with cylindrical vector beams that is extremely sensitive to three-dimensional orientation and nanoscale morphology of metal nano-objects. Our experiments and second-harmonic field calculations based on frequency-domain boundary e...

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Bibliographic Details
Published in:Nano letters 2012-06, Vol.12 (6), p.3207-3212
Main Authors: Bautista, Godofredo, Huttunen, Mikko J, Màˆkitalo, Jouni, Kontio, Juha M, Simonen, Janne, Kauranen, Martti
Format: Article
Language:English
Subjects:
Beams (radiation)
Boundary element method
Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Exact sciences and technology
Imaging
Imaging, Three-Dimensional - methods
Light
Lighting - methods
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Mathematical analysis
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Nanostructure
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Orientation
Physics
Plasmonics
Scattering, Radiation
Surface and interface electron states
Surface Plasmon Resonance - methods
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Three dimensional
Vectors (mathematics)
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Description
Summary:We introduce an imaging technique based on second-harmonic generation with cylindrical vector beams that is extremely sensitive to three-dimensional orientation and nanoscale morphology of metal nano-objects. Our experiments and second-harmonic field calculations based on frequency-domain boundary element method are in very good agreement. The technique provides contrast for structural features that cannot be resolved by linear techniques or conventional states of polarization and shows great potential for simple and cost-effective far-field optical imaging in plasmonics.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl301190x