Efficient phase conjugation via two-photon coherence in an optically dense crystal Academic Article uri icon


  • We demonstrate efficient phase conjugation in an inhomogeneously broadened rare-earth doped crystal using electromagnetically induced transparency. The observed frequency conversion efficiency of the phase conjugate in energy over a backward pump beam is as high as 10% with 1/4 of maximal Raman coherence. This efficient phase conjugation has potential applications of nonlinear optical processes such as frequency up-conversion and Raman excited spin-echo optical memory. 1999 The American Physical Society.

published proceedings

  • Physical Review A

author list (cited authors)

  • Ham, B. S., Hemmer, P. R., & Shahriar, M. S.

citation count

  • 32

complete list of authors

  • Ham, BS||Hemmer, PR||Shahriar, MS

publication date

  • April 1999