| 摘 要： | We report on an experimental observation of constructive quantum interference between two atomic transition pathways 3P1/2-5S (or 4D) and 3P3/2-5S (or 4D) via equal-frequency hybrid excitation and collision-aided radiative excitation in an Na2-Na system.Through the special excitation processes,constructive quantum interference is realized for a Λ-type quantum-beat configuration with a widely-spaced doublet (about 17cm^-1) in the excited sodium atom driven by one laser.The dependences of quantum interference on the argon buffer gas pressure and sample temperature are also examined.
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