Light amplification by coherence effects a double resonance model for lasers without inversion Academic Article uri icon


  • We consider a ladder system in which the two excited levels are coupled by a coherent drive. We show that this coupling can lead to gain regions for the laser transition even if the incoherent pumping of the middle level is such that there is no population inversion. We analyse in detail the origin of gain in such a ladder system. 1991.

published proceedings

  • Optics Communications

author list (cited authors)

  • Prasad, G. B., & Agarwal, G. S.

citation count

  • 43

complete list of authors

  • Prasad, G Bhanu||Agarwal, GS

publication date

  • December 1991