Composite optical vortices may form when two or more beams interfere. Using analytical and numerical techniques, we describe the motion of these optical phase singularities as the relative phase or amplitude of two interfering collinear nonconcentric beams is varied. The creation and the annihilation of vortices are found, as well as vortices having translational velocities exceeding the speed of light.
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Journal of the Optical Society of America, Optical Society of America, vol. 20, no. 06, June 2003
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