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Applied Optics

Applied Optics


  • Vol. 39, Iss. 24 — Aug. 20, 2000
  • pp: 4300–4305

Coherent, directional, laserlike emission from random gain media

Mohamed Shukri and Robert L. Armstrong  »View Author Affiliations

Applied Optics, Vol. 39, Issue 24, pp. 4300-4305 (2000)

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We present experimental evidence for coherent, directional emission from a random gain medium above the threshold for laserlike emission. In particular, we report the first observation (to our knowledge) of a coherent angular backscattering peak above this threshold. A plausible explanation of our findings follows from the assumption that superfluorescent emission occurs in the gain medium above threshold.

© 2000 Optical Society of America

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(140.3460) Lasers and laser optics : Lasers
(290.1350) Scattering : Backscattering
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

Original Manuscript: July 16, 1999
Revised Manuscript: May 18, 2000
Published: August 20, 2000

Mohamed Shukri and Robert L. Armstrong, "Coherent, directional, laserlike emission from random gain media," Appl. Opt. 39, 4300-4305 (2000)

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