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Modal phase-matched second harmonic generation is obtained in sub-micron AlGaAs waveguides using a continuous-wave laser at telecommunication wavelengths. The tunability and robust fabrication process make this device ideal for integrated wavelength conversion.
Sub-ps pulse compression is demonstrated by using an integrated nonlinear chirper based on an integrated, low loss, low dispersion, high index glass (Hydex??) spiral waveguide. Compressions of 40% are demonstrated for peak power around 100 W.
We show that temporal pulse compression can be achieved by using an integrated, low dispersion, high index glass (Hydexreg) waveguide. Sub-ps compression is demonstrated for peak powers lower than 100 W using a 45 cm spiral waveguide.
We measured the self-phase modulation spectra at the output of deep-etched AlGaAs waveguides. The light source was an OPO laser system providing 250fs long pulses, at wavelengths around 1520nm, with a peak power as high as 1kW. FROG measurements of the OPO pulses reveal their asymmetric shape. The multi-peak spectra, observed at the waveguide output, show a dramatic asymmetry and a power shift towards...
Nonlinear switching of an optical pulse through a defect state in a one dimensional photonic microstructured AlGaAs waveguide is observed. This effect is attributed to self-phase modulation of the input spectrum in the initial part of the waveguide.
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