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Is The Sign of The Nonlinear Coefficient d22 Reversed in PPLN?

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Abstract

We have verified experimentally that the d22=dYYY nonlinear coefficient of LiNbO3 changes its sign as a result of periodic poling along the Z direction. This reversal enables the realization of all-optical polarization rotation in PPLN.

© 2006 Optical Society of America

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