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Efficient type II second harmonic generation in an indium gallium phosphide on insulator wire waveguide aligned with a crystallographic axis

par Poulvellarie, Nicolas ;Mas Arabi, Carlos ;Ciret, Charles ;Combrie, Sylvain;de Rossi, Alfredo;Haelterman, Marc ;Raineri, Fabrice;Kuyken, Bart;Gorza, Simon-Pierre ;Leo, François
Référence Optics Letters, 46, 7, page (1490-1493)
Publication Publié, 2021-04-01

Article révisé par les pairs

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Résumé :

We theoretically and experimentally investigate type II second harmonic generation in III-V-on-insulator wire waveguides. We show that the propagation direction plays a crucial role and that longitudinal field components can be leveraged for robust and efficient conversion. We predict that the maximum theoretical conversion is larger than that of type I second harmonic generation for similar waveguide dimensions and reach an experimental conversion efficiency of 12%/W, limited by the propagation loss.