Frequency-modulated stimulated Brillouin spectroscopy in LiTaO3.
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.
Sonehara
T
T
Department of Physics, Graduate School of Science, Tohoku University, Sendai, Japan.
Kaminaga
H
H
Tatsu
E
E
Saikan
S
S
Ohno
S
S