Direct and Clean Loading of Nanoparticles into Optical Traps at Millibar Pressures

  title={Direct and Clean Loading of Nanoparticles into Optical Traps at Millibar Pressures},
  author={M. Nikkhou and Yanhui Hu and James Sabin and James Millen},
Nanoparticles levitated by optical fields under vacuum conditions have applications in quantum science, the study of nanothermodynamics and precision sensing. The existing techniques for loading optical traps require ambient conditions and often involve dispersion in liquids, which can contaminate delicate optics and lead to enhanced optical absorption and heating. Here, we present a clean, dry and generic mechanism for directly loading optical traps at pressures down to 1 mbar, exploiting… 
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