Complex 3D Vortex Lattice Formation by Phase-Engineered Multiple Beam Interference
Figure 8
Analysis of presence of singularity in complex 3D vortex lattices. Taking the multiples of relatively phase-shifted three beams, the numbers of interfering beams involved are, respectively, 6 beams (first column), 9 beams (second column), and 15 beams (third column). (a)–(c) The fork formation, while the pattern is interfered with a plane wave launched at a large angle from the axis. (d)–(e) The spiral formation while the pattern is interfered with a spherical wave. The points of singularities are clearly visible as the signature of the presence of vortex distribution in the designed symmetry.
