Atomic coherences of on-resonant and off-resonant two-photon absorptions in a ladder-type atomic system
作者： Han Seb Moon , Heung-Ryoul Noh
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摘要: We report the physical origins of on-resonant and off-resonant two-photon absorption (TPA) in an open-ladder-type atomic system 5S1/2(F=1)-5P3/2(F′=0,1,2)-5D5/2(F′′=1,2,3) transitions Rb87 atoms. When TPA, including electromagnetically induced transparency (EIT), was transformed into TPA according to coupling laser frequency detuning, we clarified dynamics coherences by decomposing coherence (TC) crossover (CC) terms mixed between one-photon (OC) TC terms. The two TPAs were completely different; cause CC term, that term.
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