Second harmonic generation and nonlinear frequency conversion in photonic time-crystals

Abstract We study the nonlinear process of second harmonic generation in photonic time-crystals, materials with refractive index that varies abruptly and periodically in time, and obtain the phase matching condition for this process. We find conditions for which the second harmonic generation is hig...

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Bibliographic Details
Main Authors: Noa Konforty, Moshe-Ishay Cohen, Ohad Segal, Yonatan Plotnik, Vladimir M. Shalaev, Mordechai Segev
Format: Article
Language:English
Published: Nature Publishing Group 2025-04-01
Series:Light: Science & Applications
Online Access:https://doi.org/10.1038/s41377-025-01788-z
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