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Cascaded high-harmonic generation in quasi-phase-matched waveguides

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Abstract

We report efficient, phase-coherent high-harmonic generation in chirped periodically poled lithium niobate waveguides pumped with a watt-scale 3 µm frequency comb. Simulations support a mechanism of cascaded quadratic nonlinearity and provide insight into spectral optimization.

© 2022 The Author(s)

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