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

作     者：Malvezzi, AM Cattaneo, F Vecchi, G Falasconi, M Guizzetti, G Andreani, LC Romanato, F Businaro, L Di Fabrizio, E Passaseo, A De Vittorio, M 

作者机构：Univ Pavia Ist Nazl Fis Mat I-27100 Pavia Italy Univ Pavia Dipartimento Elettron I-27100 Pavia Italy Univ Pavia Dipartimento Fis A Volta I-27100 Pavia Italy Elettra Synchrotron Light Source TASC Ist Nazl Fis Mat Nanolithog Beamline Natl Nanotechnol Lab I-34012 Trieste Italy Univ Lecce Ist Nazl Fis Mat Natl Nanotechnol Lab I-73100 Lecce Italy Univ Lecce Dipartimento Ingn Innovaz I-73100 Lecce Italy 

出 版 物：《JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS》 (美国光学会志，B辑：光物理学)

年 卷 期：2002年第19卷第9期

页      面：2122-2128页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：Enhanced 2nd-harmonic generation Near-infrared wavelengths Surface-diffusion Selective enhancement Wave-guides Optics Co Reflection Optics gallium arsenides second harmonics Waveguide Device Component Second-harmonic generation diffraction surface diffusion 

摘      要：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. (C) 2002 Optical Society of America.