Abstract
Monolithic AlGaAs ridge Bragg reflection waveguides are used to achieve exact phase matching in a second harmonic generation experiment for a pump at 1600nm. Phase-matching bandwidth of 4.5nm, with a peak internal conversion efficiency of 205%∕Wcm2, is obtained. This conversion efficiency is comparable to numbers reported for periodically poled lithium niobate. The phase-matching peak was found to redshift with sample temperature providing tunablity at a rate of 0.25nm∕°C. Possible routes for enhancing the current efficiency levels are also discussed.
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