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Free-space quasi-phase matching

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posted on 2023-01-10, 02:48 authored by Nazar Kovalenko, Victor Hariton, Kilian Fritsch, Oleg Pronin
We report a new approach to phase matching of nonlinear materials based on the free space multipass cells. This concept quasi-phase matches crystalline quartz and increases the second harmonic generation efficiency by a factor 40.

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    physics.optics (arXiv)

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