Open AccessMeasurement of nonlinear optical refraction of composite material based on sapphire with silver by Kerr-lens autocorrelation method
Author(s) -
Xiao Yu,
Yuhua Wang
Publication year - 2014
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.22.000177
Subject(s) - supercontinuum , materials science , optics , refractive index , sapphire , lens (geology) , refraction , absorption (acoustics) , dispersion (optics) , optoelectronics , laser , wavelength , photonic crystal fiber , physics , composite material
Silver nanoparticles synthesized in a synthetic sapphire matrix were fabricated by ion implantation using the metal vapor vacuum arc ion source. The optical absorption spectrum of the Ag: Al2O3 composite material has been measured. The analysis of the supercontinuum spectrum displayed the nonlinear refractive property of this kind of sample. Nonlinear optical refraction index was identified at 800 nm excitation using the Kerr-lens autocorrelation (KLAC) technique. The spectrum showed that the material possessed self-defocusing property (n(2) = -1.1 × 10(-15) cm(2)W). The mechanism of nonlinear refraction has been discussed.