#Multidimensional, dual-channel vortex beam generator
“#Multidimensional, dual-channel vortex beam generator” Beam generator. Credit: Fan et al., doi: 10.1117/1.AP.2.4.045001 Optical vortices, characterized by a helical phase front and doughnut-shaped intensity distribution, contribute to a broad range of applications, from microscopy to optical communications. And applications for optical vortices are proliferating. So, what’s the best way to generate optical vortices? Active, direct…