Abstract

The reflectance and fidelity of phase conjugation of stimulated Brillouin scattering (SBS) is studied in the saturation region for focusing in an unbounded medium. The electric fields are expanded into Hermite-gaussian modes. The resulting equations for the mode amplitudes are compared with those for SBS in a waveguide. Numerical calculations for reflectance and fidelity as function of pump power are presented for TEM 00 mode pumping. Shot to shot fluctuations of reflectance and fidelity are predicted as a result of Stokes wave generation from noise.

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