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4 August 2021 Temperature control of levitated nanoparticles in an optical trap
Danika Luntz-Martin, R. Greg Felsted, Siamak Dadras, Peter J. Pauzauskie, A. Nick Vamivakas
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Proceedings Volume 11798, Optical Trapping and Optical Micromanipulation XVIII; 1179812 (2021) https://doi.org/10.1117/12.2595583
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Optically levitated nanoparticles provide excellent systems to sense minute forces and explore quantum effects in a large system. However, optically levitated nanoparticles are prone to heating and require cooling and temperature stabilization to reach sensitivities necessary to study small forces and quantum effects. This problem can be solved by trapping nanocrystals doped with rare-earth ions that can be anti-Stokes cooled by tens of degrees. The efficiency of the anti-Stokes depends on gas pressure and can counter heating due to optical absorption. Cooling nanocrystals allows for thermally stabilizing nanocrystal systems to measure minute forces and quantum effects.
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Danika Luntz-Martin, R. Greg Felsted, Siamak Dadras, Peter J. Pauzauskie, and A. Nick Vamivakas "Temperature control of levitated nanoparticles in an optical trap", Proc. SPIE 11798, Optical Trapping and Optical Micromanipulation XVIII, 1179812 (4 August 2021); https://doi.org/10.1117/12.2595583
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KEYWORDS
Nanoparticles
Nanocrystals
Optical tweezers
Absorption
Ions
Molecules
Particles
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