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Field and Intensity Correlations in Amplifying Random Media
Physical Review B
  • Alexey Yamilov, Missouri University of Science and Technology
  • Shih-Hui Chang
  • Alexander Burin
  • Allen Taflove
  • Hui Cao
We study local and nonlocal correlations of light transmitted through active random media. The conventional approach results in divergence of ensemble-averaged correlation functions due to the existence of lasing realizations. We introduce a conditional average for correlation functions by omitting the divergent realizations. Our numerical simulation reveals that amplification does not affect local spatial correlation. The nonlocal intensity correlations are strongly magnified due to selective enhancement of the contributions from long propagation paths. We also show that by increasing gain, the average mode linewidth can be made comparable to the average mode spacing. This implies that light transport through a diffusive random system with gain may exhibit some similarities with that through a localized passive system.
National Science Foundation (U.S.)
Keywords and Phrases
  • Optical Correlation,
  • Random Media
Library of Congress Subject Headings
Light - Scattering
Light - Transmission
Document Type
Article - Journal
Document Version
Final Version
File Type
© 2005 American Physical Society (APS), All rights reserved.
Publication Date
Citation Information
Alexey Yamilov, Shih-Hui Chang, Alexander Burin, Allen Taflove, et al.. "Field and Intensity Correlations in Amplifying Random Media" Physical Review B (2005)
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