Quantum ElectronicsOptical properties of a semiconductor upon two-photon excitation of biexcitons by a powerful pump pulse and one-photon probing in the M bandA. V. Corovai, P. I. KhadzhiPublished Oct 31, 2001• 26 citationsPublisherAbstractIt is shown that upon two-photon excitation of bi-excitons from the ground state by a powerful optical pulse, a weak laser pulse is amplified within the M band.DOI10.1070/qe2001v031n10abeh002080