Scalar wave propagation in random amplifying media: Influence of localization effects on length and time scales and threshold behavior

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.013814· OSTI ID:22058773

Frank, Regine ^[1]; Lubatsch, Andreas ^[2]

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1. Institut fuer Theoretische Festkoerperphysik, Karlsruhe Institute of Technology (KIT), Wolfgang-Gaede Strasse 1, D-76131 Karlsruhe (Germany)
2. Physikalisches Institut, Universitaet Bonn, Nussallee 12, D-53115 Bonn (Germany)

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 semianalytical 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 semianalytical way by a finite imaginary part of the dielectric function. Energy conservation in terms of a generalized Ward identity is taken into account.

• OSTI ID: 22058773
• Journal Information: Physical Review. A, Vol. 84, Issue 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
DIELECTRIC MATERIALS
ENERGY CONSERVATION
INTERFERENCE
PROPAGATOR
THREE-DIMENSIONAL CALCULATIONS
VISIBLE RADIATION
WARD IDENTITY
WAVE PROPAGATION