Laser refrigeration of optically levitated sodium yttrium fluoride nanocrystals
Abstract
Solid state laser refrigeration can cool optically levitated nanocrystals in an optical dipole trap, allowing for internal temperature control by mitigating photothermal heating. This work demonstrates cooling of ytterbium-doped cubic sodium yttrium fluoride nanocrystals to 252 K on average with the most effective crystal cooling to 241 K. The amount of cooling increases linearly with the intensity of the cooling laser and is dependent on the pressure of the gas surrounding the nanocrystal. Cooling optically levitated nanocrystals allows for crystals prone to heating to be studied at lower pressures than currently achievable and for temperature control and stabilization of trapped nanocrystals.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 30, 2021
- Source ID
- 10.1364/ol.426334
Entities
People
- A. Nick Vamivakas
- Danika R. Luntz-Martin
- Peter J. Pauzauskie
- Robert G. Felsted
- Siamak Dadras
Organizations
- Office of Naval Research
- Pacific Northwest National Laboratory
- University of Rochester
- University of Washington