title: Second-harmonic generation in one-dimensional photonic edge waveguides.
abstract: Diffraction losses in one-dimensional photonic crystal (PC) waveguides are the primary limitation on second-harmonic (SH) conversion efficiency. By using a finite difference time domain (FDTD) code taking into account second-order nonlinear polarization, we investigated these losses numerically, particularly at the SH wavelength. We propose an efficient SH conversion scheme in Al(x)Ga(1-x)As/air-etched waveguides. An analytical model is used to extrapolate the conversion efficiency to a number of periods for which time consumption makes the FDTD codes unsuitable.
authors.affiliation: Laboratoire de Photonique et de Nanostructures, CNRS UPR 20, Route de Nozay, 91460 Marcoussis, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Dumeige
authors.forename: F
authors.initials: F
authors.lastname: Raineri
authors.forename: A
authors.initials: A
authors.lastname: Levenson
authors.forename: X
authors.initials: X
authors.lastname: Letartre