Abstract

Large nonresonant effective nonlinear indices that are due to cascading have been observed by Z-scan and CCD camera measurements performed on quasi-phase-matched LiNbO3. Positive and negative values of n2cascad were measured at temperatures symmetrically displayed with respect to the optimum phase-matching temperatures (2.39×10-13 and -2.37×10-13 cm2/W, respectively).

© 1997 Optical Society of America

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