[Back]

W. Husinsky, A. Ajami, P. Nekvindova, B. Svecova, J. Pesicka, M. Janecek:
"Z-scan study of nonlinear absorption of gold nano-particles prepared by ion implantation in various types of silicate glasses";
Optics Communications, 285 (2012), 2729 - 2733.

Metal nano-clusters composite glasses synthesized by ion implantation have been shown as promising nonlinear
photonic material. In this paper, we report on the nonlinear absorption measurements of gold nano-particles
implanted in four structurally different types of silicate glasses. All targets containing gold nano-particles in a
layer 500 nm under the surface of the glass have been prepared by ion implantation with subsequent annealing.
The targets were characterized by UV-VIS absorption spectroscopy, transmission electron microscopy (TEM)
and by the Z-scan technique. The resulting nano-particles differed in size, range of particle size and shape as
well as depth distribution characteristic for glasses with different chemical compositions.With the Z-scan technique,
it can be shown that the nano-particles produced in silicate glasses exhibit substantial two-photon
absorption (TPA). The TPA coefficient differed depending on size, shape, and depth distribution of the metal
nano-clusters and the structure and composition of the glass substrates. The highest TPA coefficient
(16.25 cm/GW) was found for the glass BK7 in which the largest non-spherical nano-particles have been observed
in the thinnest layer.

Silicate glass Metal nano-particles Nonlinear absorption Au+ ion implantation Z-scan Ultra short lasers