Population and coherence control by three-pulse four-wave mixing
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Control of coherence and population transfer between the ground and excited states is reported using three-pulse four-wave mixing. The inherent vibrational dynamics of the system are utilized in timing the pulse sequence that controls the excitation process. A slight alteration in the pulse sequence timing causes a change in the observed signal from coherent vibration in the ground state to coherent vibration in the excited state. This control is demonstrated experimentally for molecular iodine. The theoretical basis for these experiments is discussed in terms of the density matrix for a multilevel system. (C) 1999 American Institute of Physics. [S0021-9606(99)03233-X].
Извор:Journal of Chemical Physics, 1999, 111, 9, 3779-3782
ISSN: 0021-9606 (print)