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Article Dans Une Revue Journal of Non-Crystalline Solids Année : 2020

Deformation of a chalcogenide glass film under optical modulated excitation

Résumé

We report a significant thinning of an amorphous chalcogenide film (at least 5% of its initial thickness) from the Ge-Sb-Se system deposited by RF magnetron sputtering method on a borosilicate substrate, namely a BK7. This phenomenon is due to a resonant symmetric vibration mode at a low frequency, in the tens of Hertz range. By exciting the material with modulated near-infrared light (lambda = 1.55 mu m), we observe three transmission peaks of a probing light at slightly different frequencies of modulation. We assign these resonances to the air/chalcogenide, chalcogenide/BK7 and BK7/air interfaces. Under the effect of the optical modulated radiation pressure, the mechanical deformations of these interfaces show the contribution of associated surface tensions.
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Dates et versions

hal-02796936 , version 1 (11-06-2020)

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Janine Emile, Yann Gueguen, Jean-Christophe Sangleboeuf, Virginie Nazabal, O. Emile. Deformation of a chalcogenide glass film under optical modulated excitation. Journal of Non-Crystalline Solids, 2020, 535, pp.119962. ⟨10.1016/j.jnoncrysol.2020.119962⟩. ⟨hal-02796936⟩
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