Experiments on Linear and Nonlinear Localization of Optical Vortices in Optically Induced Photonic Lattices
Figure 7
Experimental results of bandgap guidance of a vortex beam in a tunable negative defect. (a) Vortex at input. (b)–(d) Induced lattices with nonzero-intensity defect, no defect, and zero-intensity defect, respectively. (e), (f) Vortex output from the defect in (b) and its zoom-in interferogram. The circles in (f) mark the location of the vortex pairs. (g) Interferogram when the vortex is excited at nondefect site. (h) Vortex diffraction output when lattice is absent.
