Laser Refrigeration of Sodium Yttrium Fluoride Nanoparticles in a Vacuum Optical Tweezer

Danika R. Luntz-Martin,R. Greg Felsted,Siamak Dadras,Peter J. Pauzauskie,A. Nick Vamivakas

2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)（2021）

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摘要

Laser refrigeration of rare-earth doped optically levitated nanoparticles allows for cooling of 42 K. Cooling is calibrated using a cryostat. Cooling efficiency decreases at pressures below 5 mbar as thermal contact with gas molecules decreases.

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关键词

laser refrigeration,sodium yttrium fluoride nanoparticles,vacuum optical tweezer,cooling efficiency,doping,cryostat,gas molecules,photoluminescence,temperature 42.0 K,NaYF4:Yb

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