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Propagation of second-harmonic wave in quasi-phase-matching nonlinear medium

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Abstract

We studied the propagation of the second-harmonic (SH) wave in a quasi-phase-matching (QPM) medium with a slanted nonlinear grating. By solving the electromagnetic boundary value problem for the SH wave, we derived the propagation law for the SH wave, which can be interpreted as a diffraction phenomenon. Such interpretation was supported by a series of SH generation experiments with a periodically-poled lithium niobate crystal with a slanted QPM grating.

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Acknowledgments

This work was supported by the Korea Research Institute of Standards and Science under the ‘Metrology Research Center’ project. We appreciate M. M. Fejer and B. Boulanger for raising original questions on this topic, and their useful discussions, and H. S. Moon for providing his fiber amplifier for our experiment.

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Correspondence to Myoungsik Cha.

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Choi, H.J., Kim, B.J. & Cha, M. Propagation of second-harmonic wave in quasi-phase-matching nonlinear medium. Appl. Phys. B 111, 217–221 (2013). https://doi.org/10.1007/s00340-012-5321-1

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