Results 191 to 200 of about 9,649 (243)
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Brillouin Scattering in Sodium Nitrite
Journal of the Physical Society of Japan, 1974The Brillouin scattering spectra in NaNO 2 have been studied using a Fabry-Perot interferometer. The observed Brillouin shifts for eighteen acoustic phonons in nine scattering geometries have been assigned to specific modes of vibration. The determined values of nine elastic constants in units of 10 10 dyn/cm 2 are C 11 =31.7, C 22 =58.2, C 33 =66.0, C
H. Shimizu +3 more
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Spontaneous Brillouin scattering in a microdroplet
Physical Review A, 1990Spontaneous Brillouin scattering in a micrometer-sized liquid droplet is analyzed from first principles, using the spherical-wave normal-mode basis. Instead of the conservation of linear momentum, this interaction is governed by a selection rule due to the conservation of angular momentum. The Brillouin spectrum is then calculated, both for observation
, Ching, , Leung, , Young
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Waveguided Raman and Brillouin scattering
SPIE Proceedings, 2000Raman and Brillouin spectroscopy in planar waveguides can be performed by coupling the laser beam to the waveguide with a prism and by collecting the scattered light from the front surface. Brillouin spectra, which are different for excitation in the different modes of the waveguides, can be accounted for by a model that considers the space ...
Montagna, Maurizio +6 more
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Stimulated Brillouin Scattering
Applied Optics, 1969Stimulated Brillotuin scattering, the efficient scattering of light from parametrically amplified therma acoustic waves, has found many valuable uses since its initial observation and identification. Among these uses are included the measurement of hypersonic velocities and absorption in the gigaherz frequency range, laser frequency shifting, laser Q ...
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Resonant Brillouin scattering in ZnSe
Physical Review B, 1977Resonant Brillouin scattering in ZnTe has been investigated at room temperature by using injected acoustic domains.
Sadao Adachi, Chihiro Hamaguchi
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Multikilohertz stimulated Brillouin scattering
Optics Letters, 1994We report, for the first time to our knowledge, multikilohertz stimulated-Brillouin-scattering phase conjugation of copper-vapor laser radiation. The small wavelength shift associated with the Stokes radiation is shown to permit double-pass aberration correction of the copper-vapor laser, avoiding the postlasing absorption.
M A, O'Key, M R, Osborne
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Brillouin scattering in oligobutene
The Journal of Chemical Physics, 1982Ultrasonic and hypersonic relaxation data are reported for a polymeric liquid oligobutene at frequencies between 51 kHz and 8 GHz in the temperature range from -60 to 100 °C. It is found that the superposition principle holds up to 0.76 GHz for shear data, while for the bulk process spectral narrowing takes place around 3 GHz.
Ryusuke Kono +2 more
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Brillouin scattering in RbNbWO6
Journal of Applied Physics, 2003Micro-Brillouin scattering measurements of RbNbWO6, a defect pyrochlore, that exhibits superionic conductivity and ferroelectric properties, have been performed in the 213–573 K temperature range. In this work the presence of quasielastic scattering (central peak) has been documented.
Mirosław Ma̧czka +4 more
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Brillouin scattering in semiconductors
1975Brillouin scattering is known to be a valuable probe of acoustic phonons in gases, liquids and solids. The effects peculiar to Brillouin scattering in semiconductors will be the subject of this chapter. The velocity of sound is determined directly from the Brillouin shift; so, generally, elastic constants and velocity anisotropy, relaxation processes ...
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1996
Abstract Brillouin scattering is the inelastic interaction of light with acoustic phonons which results in a shift in the frequency of scattered radiation. This effect is similar to Raman scattering, but information is obtained abont acoustic branches of the phonon spectrum.
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Abstract Brillouin scattering is the inelastic interaction of light with acoustic phonons which results in a shift in the frequency of scattered radiation. This effect is similar to Raman scattering, but information is obtained abont acoustic branches of the phonon spectrum.
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