Inversion ellipsométrique

Fit de n(λ), k(λ) et d à partir de données ellipsométriques spectroscopiques Ψ, Δ. Mono- ou multi-angle. Modèle de dispersion Cauchy + Urbach.

Cauchy + Urbach dispersion model fit by bounded gradient-descent. Multi-angle data resolves the (n, d) ambiguity of single-angle measurements. Built-in synthetic demo dataset; CSV upload supported.