Open AccessMeasurement of nonlinear optical parameters of graphene oxide by Z-scan
Author(s) -
I C Parra,
Iván Gómez,
Rafael Cabanzo,
Sonia Valbuena Duarte,
F. Racedo
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1219/1/012004
Subject(s) - refractive index , attenuation coefficient , materials science , absorption (acoustics) , graphene , transmittance , laser , radiation , oxide , refraction , electromagnetic radiation , optics , molar absorptivity , saturable absorption , analytical chemistry (journal) , optoelectronics , chemistry , physics , fiber laser , chromatography , metallurgy , nanotechnology , composite material
The behavior of the non-linear refraction index, the non-linear absorption coefficient and the complex value of the third-order electrical susceptibility of a concentrated graphene oxide solution at 50% m/v and its corresponding dependence on the laser emission power by the Z-scan technique. The value of the non-linear refractive index η 2 , non-linear absorption coefficient β and the complex value of the electric susceptibility χ (3) were obtained directly by quantifying the transmittance Normalized of the solution when exposed to the electromagnetic radiation of a Nd: YAG laser emitting at 532 nm in continuous wave mode. It was found that β increases and η 2 decreases exponentially by increasing the emission power, respectively. In addition, it was observed that for powers greater than 30 mW, the phenomena of saturable absorption and non-linear refraction related to the effects of thermal induction and influence of the phenomenon of self-defocalization of the incident radiation, respectively, are manifested.