CRYSTALLIZATION OF DIELECTRIC SPHERES IN LASER STANDING-WAVE FIELD

Experimental study on crystallization of polystyrene spheres and SrTiO 3 particles in laser standing wave field is presented. The diameter of polystyrene, which are able to be trapped, is 7 times smaller than th at reported by Burns, the corresponding lattice constant is reduced to 1.5 mum. The crystallization effect of SrTiO3 particles with a refrac tive constant of 2.5 in the visible range is observed for the first ti me. Based on the results above we believe that it is possible to const ruct photonic crystal with lattice constant extended to visible wave r ange by this method.