Fabrication of photonic crystal slabs and defects using laser interference lithography and focused ion beam-assisted deposition

Abstract

A method is described for fabricating photonic crystal slabs, using a combination of laser interference lithography for generating a regular periodic structure (the crystal lattice), and focused ion beam-assisted deposition for defining defects in this lattice, which may act as waveguides or resonators. As an example, results will be shown of a photonic crystal slab with a line defect in silicon nitride.