title: Linearly polarized, single-mode spontaneous emission in a photonic nanowire.
abstract: We introduce dielectric elliptical photonic nanowires to funnel efficiently the spontaneous emission of an embedded emitter into a single optical mode. Inside a wire with a moderate lateral aspect ratio, the electromagnetic environment is largely dominated by a single guided mode, with a linear polarization oriented along the ellipse major axis. The resulting monomode spontaneous emission is maintained over a broad wavelength range, a key asset of this 1D photonic structure. Our theoretical analysis is completed by an experimental study of GaAs elliptical photonic wires with embedded InAs quantum dots. In particular, the fraction of collected photons with the desired linear polarization can exceed 95%.
authors.affiliation: CEA-CNRS-UJF group Nanophysique et Semiconducteurs, CEA, INAC, SP2M, Grenoble, France.
authors.forename: Mathieu
authors.initials: M
authors.lastname: Munsch
authors.forename: Julien
authors.initials: J
authors.lastname: Claudon
authors.forename: Joël
authors.initials: J
authors.lastname: Bleuse
authors.forename: Nitin S
authors.initials: NS
authors.lastname: Malik
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Dupuy
authors.forename: Jean-Michel
authors.initials: JM
authors.lastname: Gérard
authors.forename: Yuntian
authors.initials: Y
authors.lastname: Chen
authors.forename: Niels
authors.initials: N
authors.lastname: Gregersen
authors.forename: Jesper
authors.initials: J
authors.lastname: Mørk