Title :
Second-harmonic resonances in GaAs/AlGaAs photonic crystal slabs
Author :
Vecchi, G. ; Andreani, L.C. ; Guizzetti, Giorgio ; Patrini, M. ; Malvezzi, A.M. ; Businaro, L. ; Di Fabrizio, E. ; Romanato, Filippo ; Passaseo, A. ; De Vittorio, M.
Author_Institution :
INFM, Pavia Univ., Italy
Abstract :
Two-dimensional photonic crystals etched into GaAs/AlGaAs waveguides have been investigated by means of second-harmonic generation (SHG) from the surface of the samples. 130-fs laser pulses from a tunable Ti:sapphire source at 800 nm and from an optical parametric oscillator in the range 1.4-1.6 micron have been chosen to excite SH signals in reflection and diffraction directions. Their observed behavior reflects the GaAs crystalline symmetry and the photonic crystal structure, respectively.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; high-speed optical techniques; light diffraction; optical harmonic generation; optical materials; optical parametric oscillators; optical pumping; photonic crystals; titanium; 130 fs; 800 nm; Al2O3:Ti; GaAs crystalline symmetry; GaAs-AlGaAs; SHG; Ti:sapphire source; laser pulse; optical parametric oscillator; photonic crystal structure; second-harmonic generation; second-harmonic resonance; two-dimensional photonic crystal slab; Etching; Gallium arsenide; Optical pulse generation; Optical surface waves; Optical waveguides; Photonic crystals; Resonance; Signal generators; Slabs; Surface waves;
Conference_Titel :
Lasers and Electro-Optics Europe, 2003. CLEO/Europe. 2003 Conference on
Print_ISBN :
0-7803-7734-6
DOI :
10.1109/CLEOE.2003.1312315
