Large mode-volume, large beta, photonic crystal laser resonator

Abstract

We propose an optical resonator formed from the coupling of 13, L2 defects in a triangular-lattice photonic crystal slab. Using a tight-binding formalism, we optimized the coupled-defect cavity design to obtain a resonator with predicted single-mode operation, a mode volume five times that of an L2-cavity mode and a beta factor of 0.39. The results are confirmed using finite-difference time domain simulations. This resonator is very promising for use as a single mode photonic crystal vertical-cavity surface-emitting laser with high saturation output power compared to a laser consisting of one of the single-defect cavities.

Squeezed-state evolution and entanglement in lossy coupled-resonator optical waveguides

“…Using the tight-binding formalism [20,24], we can determine the fields and complex frequencies for the leaky modes of a coupled-cavity system. This formalism allows us to determine the mode fields and frequencies of a lossy coupled-cavity structure using only one finite-difference time domain (FDTD) calculation.…”