TY  - GEN
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/23204/
AV  - public
N2  - In this work the laser-induced ionization of atoms and simple molecules is experimentally investigated by using a Reaction Microscope and sculpted laser pulses. The Reaction Microscope allows to distinguish different ionization channels with the ion-electron coincidence technique. The sculpted laser pulses, which are realized by superposition of two laser pulses with different colors and adjustable relative phase, play a key role in controlling the electronic wavepacket with high temporal resolution.

With these two methods, phase-controllable strong-field ionization of Ar and N2 is studied and electrons emitted from single ionization of Ar and N2 are compared. Moreover,
channel-selective electron emission is investigated for the fundamental molecular case of H2. A significant difference in the low-energy photoelectron yield between bound and
dissociative ionization channel is observed, proving the Born-Oppenheimer-based two-step process is not complete. Finally, this observation is understood as the population and subsequent decay of autoionizing states by further investigations with the two-color laser pulses.
A1  - Mi, Yonghao
CY  - Heidelberg, Germamy
ID  - heidok23204
TI  - Strong-field ionization of atoms and molecules with two-color laser pulses
Y1  - 2017///
ER  -