Phase conjugation by degenerate four-wave mixing in a solid-dye laser

Summary form only given. We present the first demonstration, to the best of our knowledge, of phase conjugation by four-wave mixing in a solid-dye laser itself. Since the laser itself is used as the nonlinear material, no additional nonlinear crystal is needed. In addition, the counter-propagating pump beams are automatically provided by laser oscillation. This system holds promise for applications of compact, easy to handle phase conjugation in the visible region.