Trapping microparticles in a structured dark focus
Quantum Physics
2023-11-14 v2 Optics
Abstract
We experimentally demonstrate stable trapping and controlled manipulation of silica microspheres in a structured optical beam consisting of a dark focus surrounded by light in all directions - the so-called Dark Focus Tweezer. Results from power spectrum and potential analysis demonstrate the non-harmonicity of the trapping potential landspace, which is reconstructed from experimental data in agreement to Lorentz-Mie numerical simulations. Applications of the dark tweezer in levitated optomechanics and biophysics are discussed.
Cite
@article{arxiv.2302.01953,
title = {Trapping microparticles in a structured dark focus},
author = {F. Almeida and I. Sousa and O. Kremer and B. Pinheiro da Silva and D. S. Tasca and A. Z. Khoury and G. Temporão and T. Guerreiro},
journal= {arXiv preprint arXiv:2302.01953},
year = {2023}
}
Comments
Final version