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Lorentz oscillator model
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<p>The Lorentz oscillator model describes the optical response of <a href="/facts/Polarization_density/2oQv9EHx">bound charges</a>. The model is named after the Dutch physicist <a href="/facts/Hendrik_Antoon_Lorentz/JbBpKFyr">Hendrik Antoon Lorentz</a>. It is a <a href="/facts/Classical_physics/gGnINVPE">classical</a>, phenomenological model for materials with characteristic resonance frequencies (or other characteristic energy scales) for optical absorption, e.g. ionic and <a href="/facts/Molecular_vibration/Y0ovRukI">molecular vibrations</a>, interband transitions (semiconductors), <a href="/facts/Phonon/tflWW6vw">phonons</a>, and collective excitations. </p>