Competition of frequency conversion and polarization coupling in periodically poled lithium niobate
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- Kong, Y., Chen, X. & Xia, Y. Appl. Phys. B (2008) 91: 479. doi:10.1007/s00340-008-3026-2
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In this paper wave-coupling equations including polarization coupling and frequency doubling in periodically poled lithium niobate (PPLN) is proposed. Numerical solutions of the coupling equations show that there is a competition between the polarization coupling and second-harmonic generation in a PPLN under the phase-matching condition. The influences of the external electric field on the polarizations and amplitudes of three interactive waves are studied.