title: Dynamics of short pulses and phase matched second harmonic generation in negative index materials.
abstract: We study pulsed second harmonic generation in metamaterials under conditions of significant absorption. Tuning the pump in the negative index range, a second harmonic signal is generated in the positive index region, such that the respective indices of refraction have the same magnitudes but opposite signs. This insures that a forward-propagating pump is exactly phase matched to the backward-propagating second harmonic signal. Using peak intensities of ~500 MW/cm(2), assuming chi((2))~80pm/V, we predict conversion efficiencies of 12% and 0.2% for attenuation lengths of 50 and 5microm, respectively.
authors.forename: Michael
authors.initials: M
authors.lastname: Scalora
authors.forename: Giuseppe
authors.initials: G
authors.lastname: D'Aguanno
authors.forename: Mark
authors.initials: M
authors.lastname: Bloemer
authors.forename: Marco
authors.initials: M
authors.lastname: Centini
authors.forename: Domenico
authors.initials: D
authors.lastname: de Ceglia
authors.forename: Nadia
authors.initials: N
authors.lastname: Mattiucci
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar