ARTICLE INFO:Received August 14, 2017 Accepted January 24, 2018 KEYWORDS:Lubricating oil, power, susceptibility, Z-scan.Aceite lubricante, potencia, susceptibilidad, Z-scan.ABSTRACT: Non-linear optical properties were obtained as a function of laser power for the 20W-50 multi-grade oil for engines. These properties were obtained by using the RESUMEN:Se determinaron las propiedades ópticas no lineales en función de la potencia del láser para el aceite multígrado 20W-50 para motores. Estas fueron obtenidas empleando la técnica Z-scan por transmisión en configuraciones de celda cerrada y abierta. Se utilizó un láser de Nd:YAG operando en modo de onda continua (CW), emitiendo en 532 nm y regulado en corriente. Para el control de la técnica se implementó una interfaz en LabVIEW que permite monitorear en tiempo real el desarrollo de la medida. Se estimaron valores del coeficiente de absorción no lineal (β), del índice de refracción no lineal (η 2 ) y de la susceptibilidad eléctrica de tercer orden (|χ (3) |), encontrándose ordenes de magnitud de 10−3 cm/W, 10 −9 cm 2 /W y 10 −5 esu respectivamente. Estos resultados muestran que el aceite lubricante para automóvil tiene propiedades ópticas no lineales significativas.

No abstract

An experimental and theoretical study of the non-linear optical properties of two derivatives of 1-Aryl-3-(4-Methoxyphenyl)-5-(Benzo(d)(1,3)Dioxol-5-yl)-2H-pirazolines was carried out. Pyrazolines based on the excitation power of the laser, to establish its potential use in the photonics industry 1. These compounds already synthesized and characterized by UV-vis spectroscopy, in THF as a solvent, were submitted to readings in the Z-scan system to determine different optical parameters, such as the non-linear refractive index (η2), the absorption coefficient nonlinear (β) and third order electronic susceptibility (X (3)). For these measurements, a Cd Nd: YAG laser emitting at 532 nm, a focus of a 10 cm lens, a 1 mm iris and a cell with a length of 1 mm were used; To support the experimental results, quantum mechanical calculations were performed with the calculation level M06-2X / 6-31 G (2d). This study allowed to correlate the molecular design with the optical properties.

No abstract