Exact solution to four-wave mixing with complex couplings: reflection geometry.
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An exact solution to photorefractive four-wave mixing equations with complex couplings in ref lection geometry is obtained. It is shown that the efficiency of the process of phase conjugation can be enhanced by introduction of a frequency shift between the pumps and the signal, similar to the case of transmission geometry. However, to obtain an improved agreement with experiment, the inclusion of transverse effects is found to be necessary.
author list (cited authors)
Petrović, M., Belić, M. R., Timotijević, D., & Jarić, M.