Inversión elipsométrica

Ajuste de n(λ), k(λ) y d a partir de datos elipsométricos espectroscópicos Ψ, Δ. Mono o multi-ángulo. Modelo de dispersión 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.