Nonradiative Relaxation of Ions in Crystals for Improving the Performance of Optical Materials

9905856Alfano该提案描述了一项为期三年的计划，该计划通过综合表征局域模式和声子模式、耦合路径以及影响这些相互作用的不同参数来研究固态材料中的非辐射弛豫细节。荧光寿命测量、共振拉曼散射、非共振拉曼散射、上转换热发光测量和时间分辨拉曼测量将被用来评估在Cr4+掺杂基质材料中发生的非辐射过程的整体和局部效应。这些测量将能够准确地确定导致弛豫的主要因素，从而有助于开发高性能光源和光学材料。

9905856AlfanoThe proposal describes a three-year program to investigate the details of non-radiative relaxation in solid-state materials using comprehensive characterization of local modes and phonon modes coupling pathways and different parameters affecting these interactions. Flourescence lifetime measurements, resonance Raman scatering, off-resonant Raman scattering, up-converted hot luminescence measurements and time resolved Raman measurements will be used to assess the overall and local effects of nonradiative processes taking place in the Cr4+ impurity-doped host materials. These measurements will be able to pinpoint the major factors responsible for the relaxation, and thus lead to help develop high performance light sources and optical materials.***