Nondegenerate four-wave mixing in rubidium vapor: Transient regime

作者：Becerra F E^*; Willis R T; Rolston S L; Carmichael H J; Orozco L A

来源：Physical Review A, 2010, 82(4): 043833.

DOI：10.1103/PhysRevA.82.043833

We investigate the transient response of the generated light from four-wave mixing (FWM) in the diamond configuration using a step-down field excitation. The transients show fast decay times and oscillations that depend on the detunings and intensities of the fields. A simplified model taking into account the thermal motion of the atoms, propagation, absorption, and dispersion effects shows qualitative agreement with the experimental observations with the energy levels in rubidium (5S(1/2), 5P(1/2), 5P(3/2), and 6S(1/2)). The atomic polarization comes from all the contributions of different velocity classes of atoms in the ensemble modifying dramatically the total transient behavior of the light from FWM.

• 出版日期2010-10-20