Lasing in disordered media

H. Cao, A. Yamilov, J. Y. Xu, E. Seelig, R. P.H. Chang

Research output: Contribution to journalConference article

Abstract

We review our recent work on lasing in active random media. Light scattering, which had been regarded detrimental to lasing action for a long time, actually provided coherent feedback for lasing. We also trapped laser light in micrometer-sized random media. The trapping was caused by disorder-induced scattering and interference. This nontraditional way of light confinement has important application to microlasers. The threshold of ranodm laser can be reduced by incorporating some degree of order into an active random medium. Our calculation result shows that by optimizing the degree of order one can dramatically reduce the threshold of random laser to the values comparable to those of photonic bandgap defect lasers.

Original languageEnglish
Pages (from-to)134-143
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4995
DOIs
Publication statusPublished - Sep 29 2003
EventNovel In-Plane Semiconductor Lasers II - San Jose, CA, United States
Duration: Jan 27 2003Jan 29 2003

Keywords

  • Disordered system
  • Optical scattering
  • Random laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Lasing in disordered media'. Together they form a unique fingerprint.

  • Cite this