Abstract

With the availability of coherent isolated attosecond XUV pulses, a wide range of experiments has become feasible, ranging from direct measurement of the vector potential of a light field [1] to the observation of interference between bound and free electron wave packets [2] and the time-resolved measurement of cascaded Auger decays [3]. In this work, we observe the interference of electron wave-packets generated through direct photo-ionization and electron wave-packets generated through an Auger decay following XUV excitation of Krypton. The reference free electron wave packet opens the possibility to retrieve phase information about the Auger wavepacket, which can not be retrieved from the streaking alone.

© 2011 Optical Society of America