Optical Torque Exerted on a Rotator under Illumination of a Vortex Beam

• Published in: Chinese physics letters Vol. 29; no. 6; pp. 64205 - 1-064205-4
• Main Authors: Li, Dong-Hua, Pu, Ji-Xiong, Wang, Xi-Qing
• Format: Journal Article
• Language: English
• Published: 01.06.2012
• Subjects: Angular momentum; Charge; Electron beams; Illumination; Incident light; Mathematical analysis; Mathematical models; Torque

We investigate the torque on a specially shaped rotator produced by a vortex beam. The formulas for the torque along x, y and z directions are derived, and numerical calculation is performed. It is found that for the specially shaped rotator, the torque brought by the Laguerre-Gauss (LG) vortex beam...