Abstract

Over the past five years, new developments in the field of plasmonics have emerged with the goal of finely tuning a variety of metallic nanostructures to enable a desired function. The use of plasmonics in spectroscopy is of course of great interest, due to large local enhancements in the optical near field confined in the vicinity of a metal nanostructure. For a given metal, such enhancements are dependent on the shape of the structure as well as the optical properties (wavelength, phase, polarization) of the impinging light, offering a large degree of control over the optical and spatial localization of the plasmon resonance. In this focal point, we highlight recent work that aims at revealing the spatial position of the localized plasmon resonances using a variety of optical and non-optical methods.

Broadband coherent hyperspectral near-field imaging of plasmonic nanostructures

U. Arieli, M. Mrejen, and H. Suchowski
Opt. Express 27(7) 9815-9820 (2019)

Hyperspectral imaging with scanning near-field optical microscopy: applications in plasmonics

J.-S. Bouillard, S. Vilain, W. Dickson, and A. V. Zayats
Opt. Express 18(16) 16513-16519 (2010)

Mesoscale surface plasmons: modelling and imaging using near-field scanning optical microscopy

Ari D. Mayevsky, Timothy J. Davis, Patrycja M. Ballard, Clare A. Henderson, and Alison M. Funston
Opt. Express 26(18) 23426-23435 (2018)

Near-field optical resonance and enhancement of a plasmonic nanocrescent cylinder tuned by a proximal plasmonic nanostructure

G. V. Pavan Kumar
J. Opt. Soc. Am. B 29(4) 594-599 (2012)

Dual-color plasmonic probes for improvement of scanning near-field optical microscopy

Hesam Heydarian, Afsaneh Shahmansouri, Payam Yazdanfar, and Bizhan Rashidian
J. Opt. Soc. Am. B 35(3) 627-635 (2018)