Ellipsometrie-inversie

Fit n(λ), k(λ) en d uit spectroscopische ellipsometrie Ψ, Δ-data. Single- of multi-angle. Cauchy + Urbach dispersiemodel.

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.