Lasing with resonant feedback in random media

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

Research output: Contribution to journalConference article

7 Citations (Scopus)

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
Pages (from-to)215-218
Number of pages4
JournalPhysica B: Condensed Matter
Volume338
Issue number1-4
DOIs
Publication statusPublished - Oct 1 2003
EventProceedings of the Sixth International Conference on Electrica (ETOPIM 6) - Snowbird, UT, United States
Duration: Jul 15 2002Jul 19 2002

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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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