YAG:Yb3+ crystal as a potential material for optical temperature sensors

摘要

The possibilities are discussed of Y3Al5O12:Yb3+ crystal as a material for an optical temperature sensor (OTS) based on the temperature dependences of the more intense spectral emission lines and on the ratio of the absorption coefficients from the ground and first excited Stark sublevels. The operating temperature and average sensitivity for OTSs are determined. It is shown that the former is an effective method for an OTS in a cryogenic temperature range (40-130 K) and the latter in a high temperature range (500-1000 K).