According to the relationships between the chemical structure of the medium and the absorption coefficient, a series of new media with small absorption coefficients has been found, which are suited for use as the amplifier media. The stimulated Brillouin scattering (SBS) parameters of these media have been calculated or measured when the pump wavelength is 1.064 μm. Choosing C2Cl4 and C4Cl6 as amplifier medium and C2H5OH as generator medium, we investigated the performances of two-cell SBS system pumped by Nd:YAG Q-switched laser. The C2H5OH has a high optical breakdown threshold and the Brillouin frequency shift of C2H5OH is close to those of C2Cl4 and C4Cl6. The results indicate that the system has the characteristics of high power-load ability, high phase-conjugation fidelity and high energy reflectivity stability.
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