Open AccessDynamic laser-induced effects in nanocomposite systems based on the cadmium sulfide quantum dots in a silicate matrix
Author(s) -
S. S. Voznesenskiy,
Alexander A. Sergeev,
И. В. Постнова,
Anna Galkina,
Yu. A. Shchipunov,
Yu. N. Kulchin
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.004415
Subject(s) - cadmium sulfide , nanocomposite , quantum dot , materials science , laser , radiation , silicate , nanoparticle , polarization (electrochemistry) , optics , lead sulfide , optoelectronics , nanotechnology , chemical engineering , chemistry , physics , engineering , metallurgy
In this paper we study the laser-induced modification of optical properties of nanocomposite based on cadmium sulphide quantum dots encapsulated into thiomalic acid shell which were embedded into a porous silica matrix. It was found that exposure to laser radiation at λ = 405.9 nm leads to modification of optical properties of nanocomposite. For this exposed area there is a significant amount of photodynamic changes under subsequent exposure to laser radiation at λ = 405.9 nm, namely photoabsorption and photorefraction which were studied at λ = 633 nm. The value of these effects dependent on the concentration of quantum dots and modifying radiation parameters. Moreover, it has dependence from polarization of exposure radiation.