H 2O influence evaluating and mid-IR fluorescence quenching in Tm 3+-doped GeGaSCsI chalcohalide glasses

Abstract

This work presents a detailed study on near-infrared and mid-infrared fluorescence emissions with five sets of Tm 3+-doped 75GeS 2–15Ga 2S 3–10CsI chalcohalide glass. They are prepared in normal or water drying process. Based on the diffusion-limited relaxation calculation, a detailed investigation is put forward to obtain efficient near-infrared or mid-infrared fluorescence emissions of Tm 3+ on the effect of H 2O on the Tm 3+ fluorescence. Detailed investigations are given to the interacted energy transferring processes between rare-earth, impurities and vibrating phonons with the appearance of fluorescence quenching, along with Tm 3+, H 2O concentrations varying and energy gaps forming. The radioactive properties are analyzed using compensated diffusion-limited relaxation calculation method, and the near-IR and mid-IR fluorescence properties are evaluated in detail with experimental and theoretical analysis.