Vemuri, Gautam ; Agarwal, G. S. ; Roy, Rajarshi ; Anderson, M. H. ; Cooper, J. ; Smith, S. J. (1991) Four-wave mixing with time-delayed correlated fields of arbitrary bandwidths and pump intensities Physical Review A, 44 (9). pp. 6009-6016. ISSN 1050-2947
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Official URL: http://pra.aps.org/abstract/PRA/v44/i9/p6009_1
Related URL: http://dx.doi.org/10.1103/PhysRevA.44.6009
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 d-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.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 78942 |
Deposited On: | 23 Jan 2012 14:59 |
Last Modified: | 23 Jan 2012 14:59 |
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