Direct quantitative estimation of the spatial energy migration between ions Yb³⁺ in Gd3Ga5O12 matrix

摘要

The phenomenon of spatial diffusion of stored energy between excited and not excited ions has been experimentally studied under conditions of high concentration of dopant and high pump gradient. Direct measurements of the diffusion coefficient as well as lifetime of the excited state in laser crystal Yb³⁺(21 at.%):Gd3Ga5O12 have been conducted by the method of tunable transient gratings.