Abstract
We recently reported the first known study of stimulated Rayleigh-Brillouin gain spectra of pure gases1 This was done by crossing two single-frequency laser beams in the gas samples of interest. As in Raman-gain techniques, the detected background light in stimulated Rayleigh-Brillouin gain spectroscopy is greatly reduced since the desired signal is emitted only along the probe beam. Thus, the stimulated Rayleigh-Brillouin gain spectroscopy reported is potentially a sensitive spectroscopic technique for probing the low-frequency excitations and fluctuations in systems with weak scatterers or with high background light.
© 1984 Optical Society of America
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