Cylindrical micro-objects with inclined end surfaces have been observed to be optically trapped in a focused laser beam and to rotate about the beam’s propagation direction. A simplified vector model is developed that accounts for the observed effect; the enhanced ray-optics model is used to simulate the behavior of time evolution for the cylindrical object in the beam. Experimental laser trap configurations are presented, along with a video image sequence of the cylinder’s precession.
© 2001 Optical Society of America
Robert C. Gauthier, "Optical Levitation and Trapping of a Micro-Optic Inclined End-Surface Cylindrical Spinner," Appl. Opt. 40, 1961-1973 (2001)