Full optical characterization of single nanoparticles using quantitative phase imaging
Artikel i vetenskaplig tidskrift, 2020

This paper introduces a procedure aimed to quantitatively measure the optical properties of nanoparticles, namely the complex polarizability and the extinction, scattering, and absorption cross sections, simultaneously. The method is based on the processing of intensity and wavefront images of a light beam illuminating the nanoparticle of interest. Intensity and wavefront measurements are carried out using quadriwave lateral shearing interferometry, a quantitative phase imaging technique with high spatial resolution and sensitivity. The method does not require any preknowledge on the particle and involves a single interferogram image acquisition. The full determination of the actual optical properties of nanoparticles is of particular interest in plasmonics and nanophotonics for the active search and characterization of new materials, e.g., aimed to replace noble metals in future applications of nanoplasmonics with less-lossy or refractory materials.


Samira Khadir

Institut Fresnel

Daniel Andrén

Chalmers, Fysik, Nano- och biofysik

Patrick C. Chaumet

Institut Fresnel

Serge Monneret

Institut Fresnel

Nicolas Bonod

Institut Fresnel

Mikael Käll

Chalmers, Fysik, Nano- och biofysik

Anne Sentenac

Institut Fresnel

Guillaume Baffou

Institut Fresnel


2334-2536 (ISSN)

Vol. 7 3 243-248


Acceleratorfysik och instrumentering

Atom- och molekylfysik och optik

Annan fysik



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