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Proceedings Paper

Elastic characterization of supported films by Brillouin light scattering
Author(s): Fabrizio Nizzoli; Loris Giovannini
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Paper Abstract

Bulk and surface sound waves in thermal equilibrium in solids scatter light inelastically (Brillouin scattering). From the frequency shift of the scattered light it is possible to measure the sound velocities of bulk and surface waves propagating along selected propagation directions. Then the elastic moduli can be extracted from the sound velocities. The scattered light is frequency analyzed using a Fabry-Perot interferometer, with typical frequency shifts in the range 5 - 100 GHz. The technique is non-destructive and is particularly useful for the elastic characterization of supported films and composite materials, like multilayers. Applications are shown for metallic multilayer films, polymeric films, silicon on insulator bilayers.

Paper Details

Date Published: 23 August 1996
PDF: 12 pages
Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); doi: 10.1117/12.248671
Show Author Affiliations
Fabrizio Nizzoli, INFM (Italy) and Univ. degli Studi di Ferrara (Italy)
Loris Giovannini, Istituto de Acustica "O. M. Corbino"/CNR (Italy) and INFM (Italy)


Published in SPIE Proceedings Vol. 2868:
Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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