Anti-Stokes fluorescence cooling in silica, achievements and technological perspectives

Anti-Stokes fluorescence cooling has emerged as an effective and sophisticated method for the thermal management of optical systems. Following its recent demonstration in silicate materials, active research is focused on scaling these findings to high-power radiation-balanced laser systems. With advancements in the understanding of the underlying physics, along with improved material engineering, experimental results have exceeded initial expectations, culminating in the successful development of the first iterations of radiation-balanced fiber laser systems. This article reviews the progress in these findings and outlines future perspectives, particularly in light of recent advancements in vapor deposition technology and fiber engineering.