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By using a high-precision FM Brillouin spectrometer with the spectral resolution of 20 kHz, we have succeeded in determining the Brillouin linewidth of single-crystal LiTaO(3). The large directional anisotropy for the attenuation rate of the longitudinal elastic wave and the extremely narrow Brillouin linewidth of 1.60 MHz have been observed at room temperature.

High performance laser linewidth broadening for stimulated Brillouin suppression with zero parasitic amplitude modulation Observation of three-photon absorption and saturation of two-photon absorption in amorphous nanolayered Se / As 2 S 3 thin film structures From the symmetry analysis of frequency modulated ͑FM͒ stimulated Brillouin spectrum in As 40 Se 60 glass, we demonstrate a separate detection of electrostrictive and absorptive FM Brillouin spectra as well as the detection of real and imaginary parts of Brillouin spectrum due to FM spectroscopy.