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Voigt profile: Gaussian core, Lorentzian wings

What you are seeing: the Voigt absorption profile (orange) is the convolution of a Gaussian (cyan, thermal broadening) with a Lorentzian (green, natural / pressure broadening). The Gaussian dominates the core; the Lorentzian dominates the far wings.

Figure 1. Voigt vs constituents.
σ (Gauss)0.80
γ (Lorentz)0.40

WHAT TO TRY

  • Vary each control and watch the rail readouts respond.
  • Compare the diagnostic plot against the live scene.