10.1021/acsphotonics.6b00520.s001
Naima Khebbache
Naima
Khebbache
Anthony Maurice
Anthony
Maurice
Smail Djabi
Smail
Djabi
Isabelle Russier-Antoine
Isabelle
Russier-Antoine
Christian Jonin
Christian
Jonin
Sergey E. Skipetrov
Sergey E.
Skipetrov
Pierre-François Brevet
Pierre-François
Brevet
Second-Harmonic
Scattering from Metallic Nanoparticles
in a Random Medium
American Chemical Society
2017
80 nm diameter silver nanoparticles
Random Medium
nonlinear medium
intensity levels
second-harmonic intensity decreases
silver nanoparticles
second-harmonic photons
Metallic Nanoparticles
interaction time
Second-Harmonic Scattering
photon path length
Polarization analysis
200 nm diameter latex nanospheres
2017-01-03 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Second-Harmonic_Scattering_from_Metallic_Nanoparticles_in_a_Random_Medium/4547212
We
report the second-harmonic scattering intensity from silver
nanoparticles dispersed in a linear random medium. The medium is formed
by an aqueous solution of 80 nm diameter silver nanoparticles acting
as nonlinear optical sources and 200 nm diameter latex nanospheres
used as scattering centers. At photon scattering mean free paths longer
than the ballistic photon path length, the second-harmonic intensity
decreases exponentially due to the linear scattering of both the fundamental
and harmonic beams. However, below a critical photon scattering mean
free path, the decrease of the nonlinear optical intensity levels
off. Polarization analysis further provides details about the transition
from the ballistic to scattered second-harmonic photons. Because of
the incoherent nature of the second-harmonic scattering process, we
suggest that a lengthening of the interaction time of the fundamental
photons with the nonlinear medium occurs.