Statistical properties of the reflectance and transmittance of an amplifying random medium

Article

关键词: STRONG-LOCALIZATION REGIME;    WAVE TRANSPORT;    LIGHT;    SCATTERING;    LASER;    BACKSCATTERING;    AMPLIFICATION;    TRANSMISSION;    ABSORPTION;   

DOI  :  10.1103/PhysRevB.56.5974

来源: SCIE

【 摘 要 】

Statistical properties of the transmittance (T) and reflectance (R) of an amplifying layer with one-dimensional disorder are investigated analytically within the random phase approximation. Whereas the transmittance at typical realizations decreases exponentially with the layer thickness L just as it does in absorbing media, the average (T) and (R) are shown to be infinite even for finite L due to the contribution of low-probability resonant realizations corresponding to the non-Gaussian tail of the distribution of 1n T. This tail differs drastically from that in the case of absorption. The physical meaning of typical and resonant realizations is discussed.

【 授权许可】

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