中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113209-113401.doi: 10.1088/1674-1056/19/11/113209
牛金艳, 裴丽娅, 吴令安, 傅盘铭
Niu Jin-Yan(牛金艳), Pei Li-Ya(裴丽娅), Wu Ling-An(吴令安), and Fu Pan-Ming (傅盘铭)†ger
摘要: We study phase-conjugate six-wave mixing spectroscopy based on electromagnetically-induced-transparency in a Doppler-broadened folded four-level system. It is found that the six-wave mixing spectrum can be either Doppler-free or very broad, depending on whether the interference between the polarisations of atoms with different velocities is constructive or destructive. To obtain the Doppler-free six-wave mixing spectrum in the folded four-level system, the conditions are more stringent in comparison with those in the cascade and N-type four-level systems. This polarisation interference can be controlled in the presence of a strong coupling field.
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