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Ridge optical waveguide curved in a KTiOPO4 single crystal for triple photon generation: preliminary characterization by birefringence phase-matched third-harmonic generation

Abstract : Ridge waveguides carved in bulk nonlinear crystals such as KTiOPO4 (KTP) are used to reach a strong confinement of electromagnetic waves with large second-order or third-order non-linearity. We report on our recent experiments where we show the possibility to shape the birefringence phase-matching (BPM) conditions for direct Third-Harmonic Generation (THG: ω + ω + ω → 3ω) in micrometric KTP ridge waveguides by acting on their transverse dimensions. The real goal of this preliminary study is to design quantum optical experiments based on Triple Photons Generation (TPG: 3ω → ω + ω + ω) that is the reverse process of THG, thus exhibiting the same BPM conditions.
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https://hal-cnrs.archives-ouvertes.fr/hal-03746429
Contributor : Véronique BOUTOU Connect in order to contact the contributor
Submitted on : Friday, August 5, 2022 - 11:55:50 AM
Last modification on : Sunday, August 7, 2022 - 3:03:18 AM

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EOSAM2021_Vernay_et_al.pdf
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  • HAL Id : hal-03746429, version 1

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Augustin Vernay, Véronique Boutou, Corinne Felix, Florent Bassignot, Mathieu Chauvet, et al.. Ridge optical waveguide curved in a KTiOPO4 single crystal for triple photon generation: preliminary characterization by birefringence phase-matched third-harmonic generation. The European Optical Society Annual Meeting, EOSAM, Sep 2021, Rome, Italy. ⟨hal-03746429⟩

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