Coherent Backscattering of Light from Amplifying Random Media
Diederik Sybolt Wiersma, Meint P. van Albada, Ad Lagendijk
We report on coherent backscattering measurements from amplifying random media using optically pumped Ti:sapphire powders. The top of the backscattering cone sharpens with increasing gain, reflecting a change in the relative contributions to the intensity from paths of different lengths. A calculation based on diffusion theory is performed on coherent backscattering from amplifying random media, which is in good agreement with the data.
Physical Review Letters•Aug 28, 1995•197 citations