The reported method of using phase conjugation to correct distortions
induced by projection optics was realized experimentally. In particula
r, the method was used on a low-quality 50-cm-diameter objective mirro
r to form laser radiation with a near diffraction-limited beam diverge
nce of 2.4 x 10(-6) rad. The method could be applied to high-resolutio
n imaging of objects in coherent light.