D. A. Yashunin, A. I. Korytin, A. N. Stepanov, “Polarization and spectral characteristics of the two-photon luminescence from colloidal gold nanoparticles excited by tunable laser radiation”, Fizika i Tekhnika Poluprovodnikov, 2015, Volume 49, Issue 12,Pages <nobr>1644

XIX Symposium "Nanophysics and Nanoelectronics", Nizhny Novgorod, March 10-14, 2015

Polarization and spectral characteristics of the two-photon luminescence from colloidal gold nanoparticles excited by tunable laser radiation

D. A. Yashunin^a, A. I. Korytin^a, A. N. Stepanov^ab

^a Federal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod
^b Lobachevsky State University of Nizhny Novgorod

Abstract: We have experimentally studied two-photon luminescence from a colloidal solution of spherical gold nanoparticles by tuning the wavelength of the exciting radiation. The measured polarization and spectral characteristics of the two-photon luminescence signal show that the observed nonlinear optical response is determined by the dimers present in the solution with a concentration of a few percent of total nanoparticle number.

Received: 22.04.2015
Accepted: 12.05.2015