Results 181 to 190 of about 1,026,909 (225)
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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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Transient effects on stimulated Brillouin scattering
Optics Letters, 1992We present a detailed comparison of theory and experiment for transient stimulated Brillouin scattering for a pump pulse with Gaussian temporal profile. A new approach for measuring Brillouin linewidths is demon-strated, and an unexplained asymmetry is observed.
G W, Faris, M J, Dyer, A P, Hickman
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Two-dimensional stimulated Brillouin scattering
Physical Review E, 1994The evolution of the stimulated Brillouin scattering (SBS) instability in time and two spatial dimensions is studied analytically. An exact solution of the linearized equations governing SBS in a finite homogeneous plasma shows that this two-dimensional instability usually saturates because of the convection of the ion-acoustic wave, regardless of ...
, McKinstrie +4 more
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Noise initiation of stimulated Brillouin scattering
Physical Review A, 1990We describe a theoretical model that shows how stimulated Brillouin scattering (SBS) is initiated by thermally excited acoustic waves distributed within a Brillouin-active medium. This model predicts how the SBS reflectivity, Stokes linewidth, and fluctuations in Stokes intensity depend upon the laser intensity and upon the physical properties of the ...
, Boyd, , Rzaewski, , Narum
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Stimulated Raman scattering in the presence of stimulated Brillouin scattering
The Physics of Fluids, 1988Particle simulations of stimulated Raman scattering (SRS) are presented in which stimulated Brillouin scattering (SBS) also occurs. Frequency spectra of forward and backscattered light are compared for various ratios of ion mass to electron mass. SBS is seen to weaken the SRS backscattering in all cases in which the plasma density profile includes the ...
A. C. Calder, A. J. Barnard
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Pulse compression by stimulated Brillouin scattering
Optics Letters, 1980A 20-nsec Nd:YAG laser pulse is compressed to a 2-nsec phase-conjugated pulse in a tapered glass tube filled with methane at 130 atm. A comparison with stimulated-Raman-scattering pulse compression is made. A semiclassical theory is proposed that agrees well with experimental results.
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Atmospheric Depolarization and Stimulated Brillouin Scattering
Applied Optics, 1971The effect of electrostrictively induced stimulated Brillouin scattering on atmospheric depolarization is studied. Solutions for steady-state and transient conditions are obtained.
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Stimulated-Brillouin-scattering properties of SnCl_4
Optics Letters, 1991Common liquid Brillouin media have poor optical and physical stability when they are pumped at high average powers. We demonstrate that tin tetrachloride, SnCl4, is stable and shows no thermal defocusing at 1064 nm for 20-ns pulses at fluences of 3 J/cm2 and a pulse-repetition frequency of 10 Hz. To characterize this new stimulated-Brillouin-scattering
S T, Amimoto +4 more
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Broadband stimulated Brillouin scattering
Optics Communications, 1992Abstract The effects of bandwidth (2–800 GHz) and spatial beam quality (2–70xdiffraction limit) on the threshold, reflectivity and phase conjugate fidelity of stimulated Brillouin scattering are investigated experimentally. Efficient scattering of poor beam quality, broadband radiation is demonstrated.
M.A. O'Key, M.R. Osborne
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Stimulated Brillouin scattering in the ionosphere
Journal of Geophysical Research, 1977We discuss the possibility of obtaining stimulated backscattering from the ionosphere. It is found that stimulated Brillouin scattering off ion modes and quasi modes may be possible with the signal power that is planned for the Eiscat radar.
K. B. Dysthe +3 more
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