Random lasers with coherent feedback

Hui Cao, Junying Y. Xu, Yong Ling, Alexander L. Burin, Eric W. Seeling, Xiang Liu, Robert P.H. Chang

Research output: Contribution to journalReview article

103 Citations (Scopus)

Abstract

We review our recent work on lasing in active random media. Light scattering, which had been regarded as detrimental to lasing action for a long time, actually provided coherent feedback for lasing. The fundamental difference and transition between a random laser with coherent feedback and a random laser with incoherent feedback were illustrated. 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 applications to microlasers.

Original languageEnglish
Pages (from-to)111-119
Number of pages9
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume9
Issue number1
DOIs
Publication statusPublished - Jan 1 2003

Keywords

  • Disordered system
  • Optical scattering
  • Random laser

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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