Picojoule-level supercontinuum generation in thin-film lithium niobate on sapphire
Marin Hamrouni,
Marc Jankowski,
Alexander Hwang
et al.
Abstract:We demonstrate ultraviolet-to-mid-infrared supercontinuum generation (SCG) inside thin-film lithium niobate (TFLN) on sapphire nanowaveguides. This platform combines wavelength-scale confinement and quasi-phasematched nonlinear interactions with a broad transparency window extending from 400 to 4500 nm. Our approach relies on group-velocity-matched second-harmonic generation, which uses an interplay between saturation and a small phase-mismatch to generate a spectrally broadened fundamental and second harmonic… Show more
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