We report self-pumped phase conjugation in a Cu:KNSBN crystal for light diffusely reflected from a rough surface. We have demonstrated wave-front distortion compensation for diffuse reflection. We have experimentally studied the dependence of the phase-conjugation reflectivity on the f-number of a lens imaging the spot upon the diffuser into the crystal and on the size of the beam incident upon the diffuser surface. Finally, with a Michelson interferometer we observed the phase fluctuation of the phase-compensated wave front.
© 1995 Optical Society of America
Original Manuscript: December 7, 1994
Published: May 15, 1995
Mingjun Zhao and Ichirou Yamaguchi, "Self-pumped phase conjugation of diffusely reflected light in a KNSBN crystal," Opt. Lett. 20, 1098-1100 (1995)