Study of the nonlinear optical response and thermal stability of edible oils using the Z-scan technique

Flexible optical limiters based on Cu3VSe4 nanocrystals

“…Together with the emerged loss of symmetry of the curves, the measurement suggested a solvent thermal effect induced by transient nonlinear absorption. 33,34…”

Optical limiting phenomenon study in oils of vegetable origin

“…In previous works, for the Z-scan analysis the sample was displaced 60 mm symmetrically with respect to the focus lens (−30 to 30 ) (Marbello et al, 2019;2020). The results show that both oils have a third-order nonlinearity with a negative nonlinear refractive index and a transitive absorption effect oriented to reverse saturable absorption (Marbello et al, 2020); nevertheless, phenomena such as the absorption of multiple photons and others, generally require intensities that can only be achieved with a pulsed light source.…”

“…Vegetable oils have in their chemical structure a considerable number of organic molecules, that are mostly responsible for the high non-linear response of these materials (Dixit et al, 1991;Marbello et al, 2020).…”

“…The results show that both oils have a third-order nonlinearity with a negative nonlinear refractive index and a transitive absorption effect oriented to reverse saturable absorption (Marbello et al, 2020); nevertheless, phenomena such as the absorption of multiple photons and others, generally require intensities that can only be achieved with a pulsed light source. Therefore, in the case of a CW laser source, the nonlinear refraction effects are predominant over absorption effects, the latter being produced due to a saturation in the material caused by continuous absorption (Marbello et al, 2020); For this reason, the measurement of the optical limiting effect by dispersion was performed, that is caused by the nonlinear refraction effects of the sample.…”

“…In the present work, the behavior and performance of two vegetable type oils, extra virgin olive oil (EVOO) and virgin avocado oil (VAVO) were analyzed, as devices of optical limiting by dispersion (originated by the Kerr Effect), reporting the OL threshold of each samples using a wavelength of 532 nm. These materials were chosen due to its high nonlinear optical response, manifested when they were studied by means of the Z-scan technique (Marbello et al, 2019;Marbello, Valbuena, & Racedo, 2020).…”