Demonstrations of an air-slot photonic crystal nanocavity with ultrasmall mode volumes for enhanced light-matter interactions

Abstract

We demonstrate experimentally a photonic crystal nanocavity with an ultrasmall modal volume of 10-2(λ/n)3, based on a designed air-slot in a two-dimensional photonic crystal lattice. Coupling to the tightly localized nanocavity of the fabricated sample is achieved with the tapered fiber, with strong applications to nonlinear optics and cavity quantum electrodynamics studies. © 2011 Optical Society of America.