title: Vertical-cavity surface-emitting resonances in photonic crystal films.
abstract: It is shown that thin films of dielectric, etched through with a suitably chosen lattice of holes, can support surface-emitting vertical resonances with very-high-cavity Q factors (approximately 10(5) in the case of Al(x)GaAs(1-x) on oxidized AlyGaAs1-y). A Bloch-wave expansion is used to develop a complete vector-field analysis of these resonances and to reveal their underlying physics. Since they do not require multilayer mirrors, such resonators are a practical and simple replacement for conventional vertical-cavity surface-emitting laser structures. Other applications include wavelength-division-multiplexing components and highly sensitive gas detectors.
authors.affiliation: Department of Physics, University of Bath, United Kingdom.
authors.forename: J M
authors.initials: JM
authors.lastname: Pottage
authors.forename: E
authors.initials: E
authors.lastname: Silvestre
authors.forename: P S
authors.initials: PS
authors.lastname: Russell