Cavity-enhanced absorption for optical refrigeration
Denis V. Seletskiy, Michael P. Hasselbeck, Mansoor Sheik-Bahae
TL;DR
This paper demonstrates a cavity-enhanced absorption technique that significantly improves optical refrigeration efficiency, achieving near-complete pump light absorption in Yb:ZBLAN glass using resonant cavities.
Contribution
It introduces a cavity-enhanced absorption method for optical refrigeration and analyzes a coupled-cavity scheme for active impedance matching.
Findings
Achieved 20-fold increase in optical absorption.
Demonstrated 90% pump light absorption in Yb:ZBLAN glass.
Analyzed coupled-cavity scheme for impedance matching.
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.
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