Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2011-06-15
Physics
Condensed Matter
Disordered Systems and Neural Networks
Scientific paper
We present a detailed discussion of scalar wave propagation and light intensity transport in three dimensional random dielectric media with optical gain. The intrinsic length and time scales of such amplifying systems are studied and comprehensively discussed as well as the threshold characteristics of single- and two-particle propagators. Our semi-analytical theory is based on a self-consistent Cooperon resummation, representing the repeated self-interference, and incorporates as well optical gain and absorption, modeled in a semi-analytical way by a finite imaginary part of the dielectric function. Energy conservation in terms of a generalized Ward identity is taken into account.
Frank Regine
Lubatsch Andreas
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