Abstract

Cavity phase matching has been recently demonstrated as a phase-matching method for efficient nonlinear frequency conversion in a microcavity. Here we extend it to the Type I configuration using a sub-coherent-length optical parametric oscillator consisting of an MgO-doped lithium niobate crystal sheet. It generates a tunable single-longitudinal-mode twin beam, which covers the cesium D2 line of 852.1nm and the extended band of optical communication. This microcavity is capable of peak output power of 58kW with a maximum conversion efficiency of 18.5%. Broad applications in the areas of light–atom interaction, spectroscopy, optical telecommunication, and quantum optics can be expected.

© 2011 Optical Society of America

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