First demonstration of an all-solid-state optical cryocooler

Departmental News

Posted:  Jun 06, 2018 - 12:00am

Three-body thermal model of the optical cryocooler.

Solid-state optical refrigeration uses anti-Stokes fluorescence to cool macroscopic objects to cryogenic temperatures without vibrations. Crystals such as Yb3+-doped YLiF4 (YLF:Yb) have previously been laser-cooled to 91 K. In this study, we show for the first time laser cooling of a payload connected to a cooling crystal.

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