A utilização da técnica de Z-Scan para o estudo do vidro fosfato PANK dopado com íons Nd3+ e nanocristais de CdS

• Ano de defesa: 2017
• Autor(a) principal: Souza, Jackson Martins de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; Brasil; Programa de Pós-graduação em Física
• Palavras-chave em Português: Física; Vidro; Refração; Glasses; Phosphate glasses; Rare earth; Z-Scan; Quantum dots; CdS; Nd3+; Polarizability difference; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/18333; http://dx.doi.org/10.14393/ufu.di.2017.166

The characterization of doped glasses has been an important area for the development of photonic technologies. However, the development of nanoscience and the discovery of the quantic properties of nanocrystals, increased the number of researches in glass materials with interest in technological applications by the scientific community. This work aims to investigate the nonlinear refractive index of the phosphate glass matrix (P2O5 + Al2O3 + Na2O + K2O) doped with neodymium ions and CdS nanocrystals. This research characterizes a phosphate glass matrix, which is not well known in the literature with different dopants, in this case, rare earths and nanocrystals, which they show similar absorption peaks at ultraviolet. For a nonlinear optics characterization was used the Z-Scan technique, known to its simplicity and precision when compared to other techniques. Linear optical measurements were also made, such as optical absorption and lifetime, to calculate of non-linear optics properties. The results show there is an interaction between the dopants, capable of generating a variation in linear and nonlinear optical parameters under study.