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arXiv · 1109.3004

VUV Brillouin scattering from superpolished vitreous silica

B. Rufflé·E. Courtens·M. Foret
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Abstract

A previous inelastic UV scattering experiment on silica glass is reproduced using a high grade superpolished sample. In the pristine sample condition, surface scattering is not observable compared to Rayleigh scattering from the bulk. However, exposure to a fluence of the order of 100 J/cm$^2$ at photon energies slightly below the electronic gap generates observable surface damage. This occurs after a few hours illumination with the monochromatic spectrometer beam. No anomaly in the Brillouin linewidth was found up to an excitation energy of 7.8 eV.

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B. Rufflé, E. Courtens, M. Foret. 2011-09-14. VUV Brillouin scattering from superpolished vitreous silica. https://doi.org/10.1103/physrevb.84.132201

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