Abstract

The interference between single-photon and two-photon ionization has been observed for electrons ejected in the direction n from the photomultiplier cathode exposed simultaneously to the picosecond pulse of a Nd laser Eω and its second harmonic E2ω. The change of the phase difference of such interference was measured for the switch of the polarizations from Eωn, E2ω,∥n to Eωn, En.

© 1991 Optical Society of America

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