We have achieved cryogenic optical refrigeration with a record low temperature in optical refrigeration by cooling 5% wt.Yb:YLF crystal to 119K ± 1K (∼-154 C) at l=1020 nm corresponding to its E4-E5 Stark manifold resonance with an estimated cooling power of 18 mW. This demonstration confirms the predicted minimum achievable temperature (MAT). Further cooling is achievable as shown by measurements of a doping study where a 10% wt. Yb:YLF crystal with reduced parasitic heating has predicted cooling below 100K (∼-173K). © 2013 SPIE.

Optical refrigeration progress: Cooling below NIST cryogenic temperature of 123K

DI LIETO, ALBERTO;TONELLI, MAURO;
2013-01-01

Abstract

We have achieved cryogenic optical refrigeration with a record low temperature in optical refrigeration by cooling 5% wt.Yb:YLF crystal to 119K ± 1K (∼-154 C) at l=1020 nm corresponding to its E4-E5 Stark manifold resonance with an estimated cooling power of 18 mW. This demonstration confirms the predicted minimum achievable temperature (MAT). Further cooling is achievable as shown by measurements of a doping study where a 10% wt. Yb:YLF crystal with reduced parasitic heating has predicted cooling below 100K (∼-173K). © 2013 SPIE.
2013
9780819494078
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/816573
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