Effect of amplification on conductance distribution of a disordered waveguide.
Introduction of optical gain in a disordered system results in enhanced fluctuations [F(2)=var(g[over])/<g[over]>2] of the dimensionless conductance g[over], similar to the effect of Anderson localization in a passive medium. Using numerical simulations we demonstrate that, despite such qualitative similarity, the whole distribution of the conductance of amplifying random media is drastically different from that of a passive system with the same value of F(2).
Yamilov
Alexey
A
Department of Physics, University of Missouri-Rolla, Rolla, MO 65409, USA. yamilov@umr.edu
Cao
Hui
H