Voigt profile

A Voigt profile is a way to describe how light is absorbed or emitted by a substance, considering two common effects: natural broadening and Doppler broadening. Natural broadening is due to the inherent uncertainty in a molecule’s energy levels, while Doppler broadening results from the motion of particles, causing a spread in observed frequencies. The Voigt profile combines these effects into a single, flexible curve that accurately models spectral lines—specific fingerprints of elements or compounds. It’s widely used in fields like astrophysics and spectroscopy to analyze the composition and conditions of distant objects or samples.