In the past 20 years, we have reached a broad understanding of many light-driven
phenomena in nanoscale systems. The temporal dynamics of the excited states are instead …

Laser excitation of nanometer-sized atomic and molecular clusters offers various
opportunities to explore and control ultrafast many-particle dynamics. Whereas weak laser …

Collective electron motion in condensed matter typically unfolds on a sub-femtosecond
timescale. The well-defined electric field evolution of intense, phase-stable few-cycle laser …

The observation and manipulation of electron dynamics in matter call for attosecond light
pulses, routinely available from high-order harmonic generation driven by few-femtosecond …

Near-fields of non-resonantly laser-excited nanostructures enable strong localization of
ultrashort light fields and have opened novel routes to fundamentally modify and control …

Intense laser fields interact very differently with micrometric rough surfaces than with flat
objects. The interaction features high laser energy absorption and increased emission of …

Controlled electron injection into a laser-driven wakefield at a well defined space and time is
reported based on particle-in-cell simulations. Key novel ingredients are an underdense …

Electron microscopy and diffraction with ultrashort pulsed electron beams are capable of
imaging transient phenomena with the combined ultrafast temporal and atomic-scale spatial …

Ultrashort electron pulses are crucial for time-resolved electron diffraction and microscopy of
the fundamental light-matter interaction. In this work, we study experimentally and …

Generation of attosecond bunches of energetic electrons offers significant potential from
ultrafast physics to novel radiation sources. However, it is still a great challenge to stably …