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 article

7 Scopus citations

Abstract

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
Volume338
Issue number1-4
DOIs
StatePublished - Oct 1 2003
EventProceedings of the Sixth International Conference on Electrica (ETOPIM 6) - Snowbird, UT, United States
Duration: Jul 15 2002Jul 19 2002

Keywords

  • 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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