Photon-Correlation Effects in Resonant Two-Photon Ionization
Lloyd Armstrong, P. Lambropoulos, N. K. Rahman · Physical Review Letters · 1976
The effect of photon correlations (coherence) on the transition probability of resonant two-photon processes is discussed. It is shown that coherence influences not only the transition probability but also the linewidth of the resonance. The implications for higher-order multiphoton ionization are discussed.