Journal of the Korean Physical Society

Korean Physical Society (한국물리학회)
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Brillouin Scattering Measurement of Stoichiometric Lithium Niobate Crystals by Using an Angular Dispersion-Type Fabry-Perot Interferometer

Ike, Yuji;Kojima, Seiji

  • Published : 20050100
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Abstract

An angular dispersion-type Fabry-Perot interferometer (ADFPI) was used to measure the Brillouin scattering spectra of nearly stoichiometric composition of lithium niobate single crystals. A high-reflectivity and -flatness solid etalon and a highly sensitive charge-coupled-device (CCD) detector were employed to obtain high-resolution spectra and to reduce the acquisition time significantly compared to the conventional scanning-type Brillouin scattering measurement. The temperature dependence of acoustic properties was investigated in a broad temperature range by ADFPI and the longitudinal and transverse sound velocities were determined between 100 and 900 K.

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