Multikilohertz stimulated Brillouin scattering

We report, for the first time to our knowledge, multikilohertz stimulated-Brillouin-scattering phase conjugation of copper-vapor laser radiation. The small wavelength shift associated with the Stokes radiation is shown to permit double-pass aberration correction of the copper-vapor laser, avoiding the postlasing absorption. Preliminary results on the effects of stimulated-Brillouin-scattering medium type, purity, geometry, and flow on the efficiency are presented, as is an initial assessment of the conjugation fidelity.