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Resonant second‐harmonic generation and mode dispersion in photonic crystal waveguides
Author(s) -
Andreani L. C.,
Guizzetti G.,
Patrini M.,
Vecchi G.,
Malvezzi A. M.,
Businaro L.,
Romanato F.,
Di Fabrizio E.,
Passaseo A.
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200303157
Subject(s) - photonic crystal , optics , optoelectronics , slab , guided mode resonance , dispersion (optics) , square lattice , yablonovite , photonics , second harmonic generation , physics , materials science , photonic integrated circuit , condensed matter physics , diffraction grating , diffraction , laser , geophysics , ising model
Linear and nonlinear optical measurements on GaAs/AlGaAs photonic crystal waveguides with square lattice are reported. Second‐harmonic generation in reflection shows a resonant enhancement when the pump beam is frequency‐ and momentum‐matched to a photonic mode in the slab. A full three‐dimensional theory of waveguide‐embedded photonic crystals allows to determine the dispersion of photonic modes and the intrinsic radiative losses of quasi‐guided modes lying above the light line.