Abstract
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. Results obtained are shown to obey simple scaling laws based on spot size, intensity, coherence length and Rayleigh range over a wide range of parameters. Results showing anomalous behaviour at high intensities are also presented.
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