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Active surface-emitting harmonic generators based on monolithic integration of InGaAs/GaAs single-quantum-well (SQW) lasers with multilayered nonlinear waveguides have been fabricated. Wavelength tuning of the integrated SQW laser in active/passive segmented devices has been investigated and used to control the emission angle of the harmonic light for application as spatially addressable coherent...
By using AlGaAs resonant multilayers embedded in a waveguide geometry a ten million fold enhancement for surface emitting harmonic generation over a normal GaAs film was obtained. The multilayer system alloys compensation for material losses at the harmonic and the use of thick films for efficient coupling of communication fibres to the device. The experimental results agree closely with theory and...
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