We study theoretically the phenomenon of enhanced backscattering (EBS) from a bulk disordered gain medium due to the presence of a dye and a pump beam. We show that the presence of the gain, in combination with the effect of saturation, can dramatically sharpen the EBS peak function. In the particular case of a point source incidence for the probe beam along with the presence of a plane-wave pump beam, the EBS approaches a {δ} function in angular space.{} 1996 The American Physical Society.
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Feng et al. (1996) studied this question.
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