Rotation of a Fine Particle with Circularly Polarized Anti-Parallel Collinear Laser Beams

摘要: We have succeeded in the operation of rotating a fine particle which was held without mechanical contact by circularly polarized laser beams with opposite propagation directions. A polystyrene latex 11.9 μm diameter deformed disk-like shape dispersed water, and trapped using anti-parallel collinear were set up so that they had circular polarization same direction. It observed rotated direction as rotation light. Inversion rotational light reversed particle. Although speed varied significantly from to particle, it found be proportional beam intensity. typical value for per intensity 2.1 Hz/W.