Temperature control of levitated nanoparticles in an optical trap

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.

• Publication year

  2021

• Venue

  Optical Trapping and Optical Micromanipulation XVIII

• Publication date

  2021-08-04

• Fields of study

  Materials Science, Physics

• Identifiers
  DOI 10.1117/12.2595583
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

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