Eliminating the broadening by finite aperture in Brillouin spectroscopy

We present a new optical arrangement which allows to avoid the broadening by finite aperture in Brillouin spectroscopy. In this system, all the rays scattered at the same angle by the whole scattering volume are collected on a single pixel of the area detector. This allows to use large collection an...

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Bibliographic Details
Published in:Review of scientific instruments 2011-11, Vol.82 (11), p.113110-113110-6
Main Authors: Vialla, R., Rufflé, B., Guimbretière, G., Vacher, R.
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:We present a new optical arrangement which allows to avoid the broadening by finite aperture in Brillouin spectroscopy. In this system, all the rays scattered at the same angle by the whole scattering volume are collected on a single pixel of the area detector. This allows to use large collection angles, increasing the luminosity without lowering the accuracy of the frequency-shift and linewidth measurements. Several results of experimental checks are provided, showing the efficiency of the device.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3663072