4 papers
Anomalous Motion of Particle Levitated by Laguerre-Gaussian beam
Yang Li, Lei-Ming Zhou, Nan Zhao
Laguerre-Gaussian (LG) beam has orbital angular momentum (OAM). A particle trapped in an LG beam will rotate about the beam axis, due to the transfer of OAM. The rotation of the pa…
Sensitivity of Displacement Detection for a Particle Levitated in the Doughnut Beam
Lei-Ming Zhou, Ke-Wen Xiao, Zhang-Qi Yin +2
Displacement detection of a sphere particle in focused laser beams with quadrant photodetector (QPD) provides a fast and high precision way to determine the particle location. In c…
Enhanced and tunable electric dipole-dipole interactions near a planar metal film
Lei-Ming Zhou, Pei-Jun Yao, Nan Zhao +1
We investigate the enhanced electric dipole-dipole interaction by surface plasmon polaritons (SPPs) supported by the planar metal film waveguide. By taking two nitrogen-vacancy (NV…
Optical Levitation of Nanodiamonds by Doughnut Beams in Vacuum
Lei-Ming Zhou, Ke-Wen Xiao, Jun Chen +1
Optically levitated nanodiamonds with nitrogen-vacancy centers promise a high-quality hybrid spin-optomechanical system. However, the trapped nanodiamond absorbs energy form laser…