Amplification of a probe field without population inversion in a two-level atom driven by a strong bichromatic pump field

Tai Hyun Yoon, Jong Rak Park

Research output: Contribution to journalArticle

9 Citations (Scopus)


The polarization spectrum of a two-level atom driven by a symmetrical bichromatic pump field is examined. It is shown that the heterodyne parametric four-wave interactions result in the amplification of a weak probe field without population inversion at the line center in a wide range of pump and probe field intensities. (C) 1999 Published by Elsevier Science B.V.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number2-3
Publication statusPublished - 1999 Dec 20
Externally publishedYes



  • Amplification without population inversion
  • Bichromatic pump field
  • Two-level atom
  • Two-photon emission

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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