Influence of a repump laser on a nearly degenerate four-wave-mixing spectrum in atomic vapors
quant-ph
/ Authors
/ Abstract
The influence of a repump laser on a nearly degenerate four-wave-mixing (NDFWM) spectrum was investigated. We found the amplitude and line shape of the NDFWM depended strongly on the detuning of the repump field. A five-peak structure was observed. And at some certain repump detuning a dip appeared at the central peak. A rough analysis was proposed to explain this effect.