Upconversion cooling of Er-doped low-phonon fluorescent solids
arXiv:0808.0569 · doi:10.1103/PhysRevB.79.033110
Abstract
We report on a novel mechanism for laser cooling of fluorescent solids based on infrared-to-visible upconversion often found in rare-earth-doped low-phonon materials. This type of optical cooling presents some advantages with regards to conventional anti-Stokes cooling. Among them, it allows to obtain cooling in a broader range of frequencies around the barycenter of the infrared emitting band.
4 pages, 1 figure