title: Tuning of a nonlinear THz emitter.
abstract: We numerically study a passive THz source based on difference frequency generation between modes sustained by cylindrical AlGaAs microcavities. We show that ring-like structures are advantageous in that they provide additional degrees of freedom for tuning the nonlinear process and for maximizing the nonlinear overlap integral and conversion efficiency.
authors.affiliation: Univ. Paris Diderot, Sorbonne Paris Cit´e, Laboratoire MPQ, CNRS-UMR 7162 Case courrier 7021, 75205 Paris Cedex 13, France.
authors.forename: A
authors.initials: A
authors.lastname: Andronico
authors.forename: S
authors.initials: S
authors.lastname: Mariani
authors.forename: F
authors.initials: F
authors.lastname: Ghiglieno
authors.forename: J
authors.initials: J
authors.lastname: Claudon
authors.forename: M
authors.initials: M
authors.lastname: Munsch
authors.forename: J M
authors.initials: JM
authors.lastname: Gérard
authors.forename: I
authors.initials: I
authors.lastname: Favero
authors.forename: S
authors.initials: S
authors.lastname: Ducci
authors.forename: G
authors.initials: G
authors.lastname: Leo