Second-harmonic generation in reflection and diffraction by a GaAs photonic-crystal waveguide

Andrea Marco Malvezzi*, Francesco Cattaneo, Gabriele Vecchi, Matteo Falasconi, Giorgio Guizzetti, Lucio Claudio Andreani, Filippo Romanato, Luca Businaro, Enzo Di Fabrizio, Adriana Passaseo, Massimo De Vittorio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Nonlinear reflection and diffraction measurements have been performed on a GaAs/AlGaAs photonic-crystal waveguide patterned with a square lattice: The basis in the two-dimensional unit cell consists of rings of air in the dielectric matrix. The measured angles of diffracted second-harmonic beams agree with those predicted for nonlinear diffraction conditions, Results for second-harmonic intensities as a function of incidence angle, polarization, and pump wavelength show that the reflected second-harmonic signal is dominated by the crystalline symmetry of GaAs, whereas nonlinear diffraction is determined by the photonic-crystal structure.

Original languageEnglish (US)
Pages (from-to)2122-2128
Number of pages7
JournalJournal of the Optical Society of America B: Optical Physics
Issue number9
StatePublished - Sep 2002
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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