The dispersion of the degenerate two-photon absorption coefficient is measured in ZnSe in the energy region from 2.66 to 3.52 eV, corresponding to 0.5 < hv/E-g < 0.66. Our results clearly show the sizeable contribution of the split-off band to the strength of the nonlinear absorption. By contrasting our measurement with several theoretical calculations, we find that at least the lowest four-bands should be included in the band-structure model of the two-photon absorption. General scaling laws for the calculation of the two-photon absorption coefficient provide a good estimate of the strength of the absorption but fail to account for details of the spectrum.

Dispersion of the two-photon absorption coefficient in ZnSe / Dabbicco, M.; Brambilla, M.. - In: SOLID STATE COMMUNICATIONS. - ISSN 0038-1098. - STAMPA. - 114:10(2000), pp. 515-519. [10.1016/S0038-1098(00)00102-2]

Dispersion of the two-photon absorption coefficient in ZnSe

Brambilla, M.
2000-01-01

Abstract

The dispersion of the degenerate two-photon absorption coefficient is measured in ZnSe in the energy region from 2.66 to 3.52 eV, corresponding to 0.5 < hv/E-g < 0.66. Our results clearly show the sizeable contribution of the split-off band to the strength of the nonlinear absorption. By contrasting our measurement with several theoretical calculations, we find that at least the lowest four-bands should be included in the band-structure model of the two-photon absorption. General scaling laws for the calculation of the two-photon absorption coefficient provide a good estimate of the strength of the absorption but fail to account for details of the spectrum.
2000
Dispersion of the two-photon absorption coefficient in ZnSe / Dabbicco, M.; Brambilla, M.. - In: SOLID STATE COMMUNICATIONS. - ISSN 0038-1098. - STAMPA. - 114:10(2000), pp. 515-519. [10.1016/S0038-1098(00)00102-2]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/2615
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