title: Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films.
abstract: Photoinduced second harmonic generation (SHG) in Au nanoparticle-deposited ZnO nanocrystallite (NC) films was explored by applying bicolor coherent treatment of a Nd-YAG laser with wavelength 1.06 µm and its SHG. We have established that coexistence of the ZnO and Au nanoparticles gives a substantially larger SHG output with respect to pure ZnO NC deposited on the glass substrate. It was established that the value of the second order susceptibility is about 23 pm V(-1). Better nonlinear optical susceptibilities were obtained during phototreatment at temperatures near 30-35 °C for the Au doped samples. The samples without gold NCs are temperature independent. Generally an increasing temperature leads to a decrease of the optical SHG.
authors.affiliation: Institute of Biology and Biophysics, Technical University Czestochowa, PL-42214, Aleja Armii Krajowej 36, Czestochowa, Poland.
authors.forename: K
authors.initials: K
authors.lastname: Ozga
authors.forename: T
authors.initials: T
authors.lastname: Kawaharamura
authors.forename: A
authors.initials: A
authors.lastname: Ali Umar
authors.forename: M
authors.initials: M
authors.lastname: Oyama
authors.forename: K
authors.initials: K
authors.lastname: Nouneh
authors.forename: A
authors.initials: A
authors.lastname: Slezak
authors.forename: S
authors.initials: S
authors.lastname: Fujita
authors.forename: M
authors.initials: M
authors.lastname: Piasecki
authors.forename: A H
authors.initials: AH
authors.lastname: Reshak
authors.forename: I V
authors.initials: IV
authors.lastname: Kityk