https://www.timenewsmag.com/optical-thermometry-and-its-new-nonlinear-variant/

Nonlinear optical thermometry is a new technique that was devised to perform temperature measurement in remote, spectroscopic manner. In this method, the nonlinear absorption process of the laser radiation in the near-infrared range is employed to reach electronic transitions of coordination polymers' ligands, normally excited with UV. In this way the absorbed energy can be used to generate temperature-dependent light emission.   please visit for more datils https://www.timenewsmag.com/optical-thermometry-and-its-new-nonlinear-variant/