Publication Type |
Manuscript |
School or College |
College of Science |
Department |
Physics |
Creator |
Mishchenko, Eugene |
Other Author |
Patra, M.; Beenakker, C. W. J. |
Title |
Frequency dependence of the photonic noise spectrum in an absorbing or amplifying diffusive medium |
Date |
2001-01 |
Description |
A theory is presented for the frequency dependence of the power spectrum of photon current fluctuations originating from a disordered medium. Both the cases of an absorbing medium ("grey body") and of an amplifying medium ("random laser") are considered in a waveguide geometry. The semiclassical approach (based on a Boltzmann-Langevin equation) is shown to be in complete agreement with a fully quantum mechanical theory, provided that the effects of wave localization can be neglected. The width of the peak in the power spectrum around zero frequency is much smaller than the inverse coherence time, characteristic for black-body radiation. Simple expressions for the shape of this peak are obtained, in the absorbing case, for waveguide lengths large compared to the absorption length, and, in the amplifying case, close to the laser threshold. |
Type |
Text |
Publisher |
Springer |
Journal Title |
The European Physical Journal D |
Volume |
13 |
Issue |
2 |
First Page |
289 |
Last Page |
297 |
DOI |
10.1007/s100530170278 |
citatation_issn |
14346060 |
Subject |
Random laser; Noise power spectrum; Frequency dependence; Waveguide geometry |
Subject LCSH |
Blackbody radiation; Quantum theory; Wave guides |
Language |
eng |
Bibliographic Citation |
Mishchenko, E., Patra, M., & Beenakker, C. W. J. (2001). Frequency dependence of the photonic noise spectrum in an absorbing or amplifying diffusive medium. European Physical Journal, 13(2), 1-17. |
Rights Management |
(c) Springer The original publication is available at http://dx.doi.org/10.1007/s100530170278 |
Format Medium |
application/pdf |
Format Extent |
900,826 bytes |
Identifier |
ir-main,11813 |
ARK |
ark:/87278/s64x5rzm |
Setname |
ir_uspace |
ID |
702953 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s64x5rzm |