Estudo das propriedades ópticas em vidros 0,3La2S3-0,7Ga2S 3

Abstract

CP 6154-13081-970-Campinas-SP Recebido em 2/12/96; aceito em 7/7/97 OPTICAL PROPERTIES STUDY IN 0.3La 2 S 3-0.7Ga 2 S 3. In this work we describe the synthesis and characterization of chalcogenide glass (0.3La 2 S 3-0.7Ga 2 S 3) with low phonons frequencies. Several properties were measured like Sellmeier parameters, linear refractive index dispersion and material dispersion. Samples with the composition above were doped with Dy 2 S 3. The absorption and emission characteristics were measured by electronic spectroscopy and fluorescence spectrum respectively. Raman and infrared spectroscopy shows that these glasses present low phonons frequencies and strucuture composed by GaS 4 tetrahedrals. The Lines model was used for calculate the coefficients values of the non linear refractive index.