Abstract

Since cavity-phase matching has been experimentally realized, the efficiency is limited to 20%. In this Letter, we successfully achieved a conversion efficiency as high as 41% with a slope efficiency of 48.5% using cavity-phase matching, by reflecting the pump beam at the end surface of the ${\mathrm{KTiOPO}}_4$ crystal. The high performance of the device makes it a promising candidate to substitute for quasi-phase-matching material.

© 2013 Optical Society of America

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