Demonstration of a phase conjugate resonator using degenerate four-wave mixing via coherent population trapping in rubidium

D. S. Hsiung, Xiao Wei Xia, T. T. Grove*, M. S. Shahriar, P. R. Hemmer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We demonstrate a ring cavity laser using the gain mechanism of a four-wave mixing process, mediated by two-photon Zeeman coherence resulting from coherent population trapping in a rubidium vapor cell. The cell acts as an amplifying phase conjugate mirror at one corner of the ring cavity. Even though the fundamental process requires non-degeneracy between the probe and the conjugate in the atom's frame, they are degenerate in the laboratory frame, via selection of a moving band of atoms for the gratings. As such, no frequency shifting is necessary in the cavity. The polarization orthogonality of the probe and the conjugate is compensated by an intra-cavity quarter wave plate.

Original languageEnglish (US)
Pages (from-to)79-82
Number of pages4
JournalOptics Communications
Volume154
Issue number1-3
DOIs
StatePublished - Aug 15 1998

Keywords

  • Coherent population trapping
  • Optical phase conjugation
  • Optical phase resonator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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