On a New Photogalvanic Effect Due to Free‐Carrier Absorption

Abstract A new photocurrent induced by optical orientation of free carriers under intraband absorption is theoretically investigated. Using a one‐band model it is shown that this current originates from interferences between harmonic and anharmonic processes of the electron–phonon interaction. A general expression for the current is derived for both, linear and circular polarized light. As an example the temperature dependence of the current is calculated for tellurium.

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