Four-wave mixing with time-delayed correlated fields of arbitrary bandwidths and pump intensities. Academic Article uri icon

abstract

  • We consider the generation of four-wave-mixing signals by an ensemble of two-level atoms interacting with broadband, correlated, pump and probe fields in the forward geometry. We show how the calculation of the four-wave-mixing signal reduces to the solution of six coupled Langevin equations that are numerically integrated using Monte Carlo methods. We account for the pump-induced saturation effects although the probe is weak. The finite correlation time of the pump and probe fields is also included. For weak and -correlated pump fields, we reproduce the results of Morita and Yajima [Phys. Rev. A 30, 2525 (1984)]. We find that even for short correlation times of the fields, the four-wave-mixing signal, as a function of the delay between the pump and the probe fields, starts reviving with increase in the pump intensity. This revival as a function of the pump-probe delay time becomes more pronounced with further increase in the pump intensity. 1991 The American Physical Society.

published proceedings

  • Phys Rev A

author list (cited authors)

  • Vemuri, G., Agarwal, G. S., Roy, R., Anderson, M. H., Cooper, J., & Smith, S. J.

citation count

  • 13

complete list of authors

  • Vemuri, G||Agarwal, GS||Roy, R||Anderson, MH||Cooper, J||Smith, SJ

publication date

  • November 1991