Localization of Light: Dual Symmetry between Absorption and Amplification

Paasschens, J. C. J.; Misirpashaev, T. Sh.; Beenakker, C. W. J.

Localization of Light: Dual Symmetry between Absorption and Amplification

Authors

Paasschens, J. C. J.

Misirpashaev, T. Sh.

Beenakker, C. W. J.

Description

We study the propagation of radiation through a disordered waveguide with a complex dielectric constant $ε$, and show that dual systems, which differ only in the sign of the imaginary part of $ε$, have the same localization length. Paradoxically, absorption and stimulated emission of radiation suppress the transmittance of the waveguide in the same way.
Added a reference to the paper by Z.Q. Zhang, Phys.Rev.B. 52, 7960 (1995)