Cavity-enhanced absorption for optical refrigeration
arXiv:0909.3136 · doi:10.1063/1.3397989
Abstract
A 20-fold increase over the single path optical absorption is demonstrated with a low loss medium placed in a resonant cavity. This has been applied to laser cooling of Yb:ZBLAN glass resulting in 90% absorption of the incident pump light. A coupled-cavity scheme to achieve active optical impedance matching is analyzed.
4 pages, 2 figures