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Compact femtosecond electron diffractometer with 100 keV electron bunches approaching the single-electron pulse duration limit
Lutz Waldecker, Roman Bertoni, Ralph Ernstorfer
We present the design and implementation of a highly compact femtosecond electron diffractometer working at electron energies up to 100 keV. We use a multi-body particle tracing co…
Time-Domain Separation of Optical Properties From Structural Transitions in Resonantly Bonded Materials
Lutz Waldecker, Timothy A. Miller, Miquel Rude +6
The extreme electro-optical contrast between crystalline and amorphous states in phase change materials is routinely exploited in optical data storage and future applications inclu…
Tunable sub-20 fs pulses from a 500 kHz OPCPA with 15 W average power based on an all-ytterbium laser
Michele Puppin, Yunpei Deng, Oliver Prochnow +6
An optical parametric chirped pulse amplifier fully based on Yb lasers at 500 kHz is described. Passive optical-synchronization is achieved between a fiber laser-pumped white-light…
Femtosecond electrons probing currents and atomic structure in nanomaterials
Melanie Müller, Alexander Paarmann, Ralph Ernstorfer
The investigation of ultrafast electronic and structural dynamics in low-dimensional systems like nanowires and two-dimensional materials requires femtosecond probes providing high…