Formation of optical vortices with all-glass nanostructured gradient index masks

Switkowski K., Anuszkiewicz A., Filipkowski A., Pysz D., Stepien R., Krolikowski W., and Buczynski R.

Optics Express

25 (25), 2017, 31443-31450, 10.1364/OE.25.031443

We report the development of microscopic size gradient index vortex masks using the modified stack-and-draw technique. The vortex mask has a form of flat surface all-glass plate. Its functionality is determined by an internal nanostructure composed of two types of soft glass nanorods. The generation of optical vortices with charges 1 and 2 is demonstrated.