Self-converging and multiplex optical traps

摘要

We demonstrate a simple scheme for generation phase singularities are coupled with the vortex-like orbital flows basedon a biaxial crystal. Using a shear interferometer, we were able to create a self-converging trap from the phasesingularity, which allows converging and diverging two absorbing particles. Moreover, in a certain interferometer shearmode, we were able to multiplex the trap.