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The application of the photoacoustic transmittance oscillations for determining elastic constants in gallium and indium selenides

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The application of the photoacoustic transmittance oscillations for determining elastic constants in gallium and indium selenides

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Ferrer Roca, Chantal; Segura García del Río, Alfredo; Andrés, Miguel V.; Muñoz Sanjosé, Vicente; Pellicer Porres, Julio

Aquest document és un/a article, creat/da en: 1996

Transmittance periodic oscillations are observed in GaSe and InSe on excitation with optical pulses. Such oscillations are explained in terms of photoacoustic generation of dilatational waves, which become resonant within the crystal. Spectral analysis of those oscillations in samples of different thickness has led to an accurate determination of the longitudinal acoustic‐wave velocity along the crystallographic axis c.

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