We show how spatiotemporal quasi-phase-matching emerges from all-optical poling of silicon nitride microresonators. Enabled by the coherent photogalvanic effect, the photoinduced ?(2) grating oscillates in space and time, yielding quasi-phase-matched and Doppler-shifted second-harmonic generation.
Spatiotemporal Quasi-Phase-Matching in Microresonators
Clementi M.
;Hu J.;
2024-01-01
Abstract
We show how spatiotemporal quasi-phase-matching emerges from all-optical poling of silicon nitride microresonators. Enabled by the coherent photogalvanic effect, the photoinduced ?(2) grating oscillates in space and time, yielding quasi-phase-matched and Doppler-shifted second-harmonic generation.File in questo prodotto:
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