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Nonlinear Mixing of Transverse-Optical Phonon Frequencies through Strong Anharmonicity of LiTaO3: Enhancing THz Generation

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Abstract

A phonon peak at 127 cm−1 due to nonlinear mixing of two transverse-optical phonon frequencies through anharmonicity of LiTaO3 is used to explain enhancements of effective second-order nonlinear coefficients by factors of up to 3.7.

© 2013 Optical Society of America

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