Author:
Rutledge Jay,Catanese Anthony,Hickstein Daniel D.,Allison Thomas K.,Diddams Scott A.,Kowligy Abijith S.
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.