Explore the complex dielectric function ε(ω) and the refractive index
n, k of common nanophotonics materials versus photon energy or
wavelength, plus an analytic Drude model. All curves use the same
tabulated optical constants as the rest of the Lab.
v0.2.0·Updated 2026-06-24
Model & Assumptions
Beta
Model
Tabulated refractive-index data n(λ), k(λ) interpolated in wavelength; ε = (n + ik)² with the e−iωt convention (Im ε > 0 for loss). The Drude module evaluates ε(ω) = ε∞ − ωp² / [ω(ω + iγ)] analytically.
Assumptions
Linear, isotropic, local, non-magnetic media. Values outside a table's measured range are clamped to the nearest endpoint (no extrapolation).