All-optical Saddle Trap
Optics
2024-10-29 v3
Abstract
The superposition of frequency-shifted Laguerre-Gauss modes can produce a rotating saddle-like intensity profile. When spinning fast enough, the optical forces produced by this structured light saddle generate a dynamically stable equilibrium point capable of trapping nanoparticles in a high vacuum, akin to a Paul trap but with its unique characteristics. We analyze the stability conditions and center-of-mass motion, dynamics and cooling of a nanoparticle levitated in the optical saddle trap. We expect the optical saddle to find applications in levitated optomechanics experiments requiring fast parametric modulation and inverted squeezing potential landscapes.
Keywords
Cite
@article{arxiv.2407.12668,
title = {All-optical Saddle Trap},
author = {Daniel Tandeitnik and Oscar Kremer and Felipe Almeida and Joanna Zielinska and Antonio Zelaquett Khoury and Thiago Guerreiro},
journal= {arXiv preprint arXiv:2407.12668},
year = {2024}
}