Abstract

Broadband signal and idler generation based on the spectral retracing behavior in noncollinear phase matching of optical parametric generation in periodically poled LiNbO3 (PPLN) is reported. Using PPLN of 29.5μm quasi-phase-matching period and a Q-switched Nd:YAG laser as a pump, we obtained a broad signal spectrum from 1.66 to 1.96 μm and corresponding idler wavelengths from 2.328 to 2.963 μm. The experimental results were consistent with theoretical predictions. Circular and elliptical pump beams were also compared.

© 2001 Optical Society of America

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