The Preparation and the Third-Order Optical Nonlinearities of Sodium Borosilicate Glass Doped with CulnS_2 Quantum Dots

摘要

The sodium borosilicate glass doped with CuInS_2 quantum dots was prepared by using both sol-gel and atmosphere control methods. The formation mechanism and the microstructure of the glass were examined using differential thermal analysis and thermal gravimeter, X-ray powder diffraction, X-ray photoelec-tron spectroscopy, transmission electron microscopy, scanning transmission electron microscopy, energy dispersive X-ray spectra, high-resolution transmission electron microscopy, and selected area electron diffraction. The results revealed that Cu-InS_2 quantum dots in a tetragonal crystal system had formed uniformly in the glass, and the size distribution of these quantum dots generally ranged from 5 to 15 nm. In addition, Z-scan technique was used to measure the third-order optical nonlinearities of the glass. The results indicated that the glass has excellent third-order optical nonlinearities, and thus will have potential applications in the field of nonlinear optics.