Abstract

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 Laser Induced Acoustic Desorption and allowing for the rapid and efficient trapping of nanoparticles.

Highlights

  • Dry and efficient method for loading nanoparticles into optical traps, using Laser Induced Acoustic Desorption (LIAD)

  • We found that there is an optimum pressure at which the traps can be loaded, which will depend on the size of particle and the distance between the sample and the trap

  • By tuning the launch laser intensity, we could enhance the probability of trapping single particles

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Summary

Introduction

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