Broadband Dispersion Optimization with a Differentiable Electromagnetic Modesolver

Dispersion engineering is challenging for integrated fs-Iasers and broadband frequency conversion. Here, we present an inverse design approach based on a differentiable eigenmode solver for waveguides composed of dispersive and anisotropic materials. The optimizer is benchmarked against experiments for second-harmonic generation in thin-film LiNb0
3
.