Resonant cavity-enhanced absorption for optical refrigeration

Seletskiy, D. V.; Hasselbeck, M. P.; Sheik-Bahae, M.
May 2010
Applied Physics Letters;5/3/2010, Vol. 96 Issue 18, p181106
Academic Journal
A 20-fold increase over the single path optical absorption is demonstrated with a low loss medium placed in a resonant cavity. This is applied to laser cooling of ytterbium-doped fluorozirconate glass resulting in 90% absorption of the incident pump light. A coupled-cavity scheme to achieve active optical impedance matching is analyzed.


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