Study of Lanthanum Aluminum Silicate Glasses for Passive and Active Optical Fibers

摘要

We are reporting on SiO_2-Al_2O_3-La_2O_3 glasses-with and without Yb_2O_3-suitable for nonlinear and fiber laser applications. We will also be presenting successful supercontinuum generation and fiber laser operation around 1060 nm in step-index fibers. We optimized the glass compositions in terms of thermal and optical requirements for both a high La_2O_3 and Yb_2O_3 concentration and good compatibility with a silica cladding. We also produced bulk samples, unstructured fibers, and structured fibers with a SiO_2-Al_2O_3-La_2O_3 core and silica cladding for this purpose.