Title :
Nonlinear optical response in patterned planar waveguides
Author :
Vecchi, Gabriele ; Malvezzi, Andrea Marco ; Andreani, Lucio Claudio ; Patrini, Maddalena ; Guizetti, G. ; Romanato, Filippo ; Businaro, Luca ; Di Fabrizio, Enzo ; Passaseo, Adriana ; Peyrade, David ; Chen, Yong
Author_Institution :
Dipt. di Fisica, Universita degli Studi di Pavia, Italy
fDate :
29 June-3 July 2003
Abstract :
Summary form only given. Second and third harmonic signals generated in reflection and diffraction from the surface of photonic crystal (PC) waveguides are considered as a spectroscopic diagnostic tool in two leading material systems: GaAs and Silicon. Measurements of second harmonic generation (SHG) in reflection from GaAs-based 2D patterned planar waveguides reveal resonant interaction of the impinging radiation with the quasi-guided modes of the photonic structure. Spectral and angular dependence of these effects reflects the structure of the sample and may be used for an accurate energy and momentum positioning of the photonic bands. Preliminary results of third harmonic generation (THG) from Si-based 1D patterned planar waveguides in the visible spectral range are also presented, indicating harmonic generation as a possible route towards systematic characterization and description of photonic structures.
Keywords :
III-V semiconductors; elemental semiconductors; gallium arsenide; light diffraction; light reflection; optical harmonic generation; optical planar waveguides; photonic crystals; silicon; GaAs; GaAs-based 2D patterned planar waveguides; SHG; Si; Si-based 1D patterned planar waveguides; angular dependence; diffraction; impinging radiation; momentum positioning; nonlinear optical response; patterned planar waveguides; photonic bands; photonic crystal waveguides; photonic structures; quasi-guided modes; reflection; second harmonic signals; silicon; spectral dependence; spectroscopic diagnostic tool; third harmonic signals; visible spectral range; Nonlinear optics; Optical diffraction; Optical harmonic generation; Optical planar waveguides; Optical reflection; Optical surface waves; Optical waveguides; Planar waveguides; Signal generators; Surface waves;
Conference_Titel :
Transparent Optical Networks, 2003. Proceedings of 2003 5th International Conference on
Print_ISBN :
0-7803-7816-4
DOI :
10.1109/ICTON.2003.1264580
