Optical capture of microparticles in special traps

It is shown that by means of hollow beams (light "bottles") it is possible to trap transparent spherical microobjects coordinated in radius with the beam radius. A series of experiments on the capture of transparent microobjects in arrays of light "bottles" is described. A criterion for comparison of the optical capture efficiency is introduced. The results of an experiment on capturing non-transparent spherical microparticles in a double light "bottle" are presented.