Optical levitation of nanodiamonds by doughnut beams in vacuum
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2017-03-01 |
| Journal | Laser & Photonics Review |
| Authors | Lei-Ming Zhou, Ke-Wen Xiao, Jun Chen, Nan Zhao, Lei-Ming Zhou |
| Institutions | Beijing Computational Science Research Center, Institute of Theoretical Physics |
| Citations | 38 |
Abstract
Section titled âAbstractâAbstract Optically levitated nanodiamonds with nitrogenâvacancy centers promise a highâquality hybrid spinâoptomechanical system. However, the trapped nanodiamond absorbs energy from laser beams and causes thermal damage in vacuum. It is proposed here to solve the problem by trapping a composite particle (a nanodiamond core coated with a less absorptive silica shell) at the center of strongly focused doughnutâshaped laser beams. Systematical study on the trapping stability, heat absorption, and oscillation frequency concludes that the azimuthally polarized Gaussian beam and the linearly polarized LaguerreâGaussian beam LG 03 are the optimal choices. With our proposal, particles with strong absorption coefficients can be trapped without obvious heating and, thus, the spinâoptomechanical system based on levitated nanodiamonds are made possible in high vacuum with the present experimental techniques. image