Lasing with resonant feedback in random media

H. Cao*, Y. Ling, J. Y. Xu, A. L. Burin, R. P.H. Chang

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


We studied experimentally lasing with resonant feedback in disordered media. The lasing threshold and the number of lasing modes exhibit strong dependence on the mean free path. Using a spectrally resolved speckle technique, we obtained the spatial field correlation function for individual lasing states. The electric field amplitude of a lasing state falls exponentially with the transverse coordinate at the sample surface. The spatial extent of a lasing state shrinks as the scattering length decreases.

Original languageEnglish (US)
Pages (from-to)215-218
Number of pages4
JournalPhysica B: Condensed Matter
Issue number1-4
StatePublished - Oct 2003
EventProceedings of the Sixth International Conference on Electrica (ETOPIM 6) - Snowbird, UT, United States
Duration: Jul 15 2002Jul 19 2002


  • Disordered system
  • Optical scattering
  • Random laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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