Two-pathway coherent control of photoelectron angular distributions in molecular NO

We report the observation of two-pathway coherent control in a bound-free transition for the molecular system, NO. This control is manifested as a modulation of the photoelectron angular distribution produced by coherent one- and two-photon ionization. Photopreparation of an initial state and use of an intermediate-state resonance in the two-photon arm of the interfering interaction helps to reduce the number of possible photoionization channels.