Abstract
Stimulated Brillouin scattering (SBS) reflectivity as a function of pump power density, pressure of medium and focal length for broadband KrF laser pump was investigated experimentally. SBS reflectivity increases nonlinearly, approaches to saturation and decreases with the pump power density increasing. The pressure in the medium makes the SBS reflectivity to increase. SBS saturation has a peak value with the focal length from 10cm to 100cm. Broadband multimode SBS model has been built theoretically. Experimental results agree well with the model.
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