Abstract
The rotation dynamics of particles trapped in a rotating beam is theoretically investigated. We find that there is a critical angular speed for the rotating beam. If the angular speed of the rotating beam is smaller than the critical value, the angular velocity of the trapped particle is nearly the same as that of the rotating beam, which is in accord with existing experimental observation. Otherwise, the angular velocity of the trapped particles will become periodic or quasi-periodic with time, depending on the beam polarization, which, to the best of our knowledge, has not been previously reported. Moreover, we also propose some methods to determine the ratio between the beam power and the maximal angular speed of the trapped particle, which can be used to estimate the minimum power required to rotate the particle at a given angular speed.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Kai Zeng, Junji Pu, Xiangming Xu, Yulie Wu, Dingbang Xiao, and Xuezhong Wu
Opt. Express 31(10) 16582-16592 (2023)
Oto Brzobohatý, Alejandro V. Arzola, Martin Šiler, Lukáš Chvátal, Petr Jákl, Stephen Simpson, and Pavel Zemánek
Opt. Express 23(6) 7273-7287 (2015)
Huachao Yu and Weilong She
J. Opt. Soc. Am. B 31(11) 2864-2870 (2014)