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.
Second-harmonic resonances in GaAs/AlGaAs photonic crystal slabs
2003-01-01
80920 byte
Conference paper
Electronic Resource
English
Surface-emitting second-harmonic generation in AlGaAs/GaAs waveguides
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