When light interacts with a metal nanoparticle (NP), its conduction electrons can be driven
by the incident electric field in collective oscillations known as localized surface plasmon …

Plasmonics has emerged as an important research field in nanoscience and
nanotechnology. Recently, significant attention has been devoted to the observation and the …

Nanoantennas for visible and infrared radiation can strongly enhance the interaction of light
with nanoscale matter by their ability to efficiently link propagating and spatially localized …

Strong chiroptical effects recently reported result from the interaction of light with chiral
plasmonic nanostructures. Such nanostructures can be used to enhance the chiroptical …

Boosting nonlinear frequency conversion in extremely confined volumes remains a
challenge in nano-optics research, but can enable applications in nanomedicine …

Although a relatively new area of nanoscience, nonlinear plasmonics has become a fertile
ground for the development and testing of new ideas pertaining to light–matter interaction …

Since the first report on the far-field optical detection of single metal nanoparticles in the late
1990s, the field has rapidly developed and new methods and concepts have been …

Nonlinear photon conversion is a fundamental physical process that lies on the basis of
many modern disciplines, from bioimaging and theranostics in nanomedicine to material …

We report the optical second harmonic generation from individual 150 nm diameter gold
nanoparticles dispersed in gelatin. The quadratic hyperpolarizability of the particles is …

In this paper, we develop a classical electrodynamic theory to study the optical nonlinearities
of metallic nanoparticles. The quasi free electrons inside the metal are approximated as a …