Vortices in optical beams have been the subject of extensive study since their status as a generic feature of light was established. They have found extensive use in opti[...]

In this dissertation, we use theory and computation to conduct three projects in the area of nano-optics. In the first project, we study optical coherence conversion usin[...]

Singularities defining the topology for the polarization state of nonuniformly polarizedelectromagnetic beams have been a topic of both theoretical and practical interest[...]