Theoretical-experimental method of nonlinear optics: the Z-scan technique
DOI:
https://doi.org/10.46932/sfjdv4n4-028Keywords:
nonlinear optics, Z-scan, thermal lens, liquid crystalsAbstract
We did this work to help professors and students of physics and engineering in Optics and Lasers courses who require a theoretical-experimental introductory framework to nonlinear optics. We showed in this article the basic principles of the theory, focusing on third-order nonlinear optical phenomena, using the well-known Z-scan technique for its demonstration. For this, we propose the design of a simple experiment that the interested party can do in an optics laboratory. Once the data has been obtained and processed, we implemented a practical method of interpretation of the typical graphs obtained by this technique to carry out the calculations that allow the measurement of the refractive index and the nonlinear absorption coefficient in materials that present these optical properties, as the case exemplified here of nematic liquid crystals doped with an organic dye.
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