Wavefront inversion in superradiance
Koptev V.G., Lazaruk A.M., Petrovich I.P., Rubanov A.S.
Wavefront inversion in superradiance was observed in experiment. To excite the superradiance the laser radiation was distorted by an inhomogeneous phase plate and was focused into a dye solution. Part of the backward superradiance recovered the initial divergence of the exciting radiation after passing back through the distorting plate.