Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides

AS Kowligy, A Lind, DD Hickstein, DR Carlson… - Optics letters, 2018 - opg.optica.org
We experimentally demonstrate a simple configuration for mid-infrared (MIR) frequency
comb generation in quasi-phase-matched lithium niobate waveguides using the cascaded …