English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Linear dichroism in few-photon ionization of laser-dressed helium

MPS-Authors
/persons/resource/persons141960

Meister,  Severin
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons129298

Lindenblatt,  Hannes Carsten
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30892

Pfeifer,  Thomas
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30822

Moshammer,  Robert
Division Prof. Dr. Thomas Pfeifer, MPI for Nuclear Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Meister, S., Bondy, A., Schnorr, K., Augustin, S., Lindenblatt, H. C., Trost, F., et al. (2021). Linear dichroism in few-photon ionization of laser-dressed helium. European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 75(7): 205. doi:10.1140/epjd/s10053-021-00218-0.


Cite as: https://hdl.handle.net/21.11116/0000-000A-3B2A-6
Abstract
Ionization of laser-dressed atomic helium is investigated with focus on
photoelectron angular distributions stemming from two-color multi-photon
excited states. The experiment combines extreme ultraviolet (XUV) with
infrared (IR) radiation, while the relative polarization and the
temporal delay between the pulses can be varied. By means of an XUV
photon energy scan over several electronvolts, we get access to excited
states in the dressed atom exhibiting various binding energies, angular
momenta, and magnetic quantum numbers. Furthermore, varying the relative
polarization is employed as a handle to switch on and off the population
of certain states that are only accessible by two-photon excitation. In
this way, photoemission can be suppressed for specific XUV photon
energies. Additionally, we investigate the dependence of the
photoelectron angular distributions on the IR laser intensity. At our
higher IR intensities, we start leaving the simple multi-photon
ionization regime. The interpretation of the experimental results is
supported by numerically solving the time-dependent Schrodinger equation
in a single-active-electron approximation.