title: Three-dimensional subwavelength confinement of light with dielectric microspheres.
abstract: Dielectric microspheres are shown to be capable of confining light in a three-dimensional region of subwavelength dimensions when they are illuminated by tightly focused Gaussian beams. We show that a simple configuration, not involving resonances, permits one to reach an effective volume as small as 0.6 (lambda/n)(3). It is shown that this three-dimensional confinement arises from interferences between the field scattered by the sphere and the incident Gaussian beam containing high angular components.
authors.affiliation: Institut Fresnel, Aix-Marseille Université, CNRS, 13397 Marseille, France.
authors.forename: Alexis
authors.initials: A
authors.lastname: Devilez
authors.forename: Nicolas
authors.initials: N
authors.lastname: Bonod
authors.forename: Jérôme
authors.initials: J
authors.lastname: Wenger
authors.forename: Davy
authors.initials: D
authors.lastname: Gérard
authors.forename: Brian
authors.initials: B
authors.lastname: Stout
authors.forename: Hervé
authors.initials: H
authors.lastname: Rigneault
authors.forename: Evgeny
authors.initials: E
authors.lastname: Popov
mesh_terms: D003198:Computer Simulation; D008027:Light; D008863:Microspheres; D015233:Models, Statistical; D009391:Nephelometry and Turbidimetry / Q000379:methods*; D016011:Normal Distribution; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation