Maximum Elliptical Dichroism in Atomic Two-Photon Ionization
J Hofbrucker1,2, A V Volotka1, S Fritzsche1,2
1Helmholtz-Institut Jena, Fröbelstieg 3, D-07743 Jena, Germany.
Abstract:
Elliptical dichroism is known in atomic photoionization as the difference in the photoelectron angular distributions produced in nonlinear ionization of atoms by left- and right-handed elliptically polarized light. We theoretically demonstrate that the maximum dichroism |Δ_{ED}|=1 always appears in two-photon ionization of any atom if the photon energy is tuned in so that the electron emission is dominantly determined by two intermediate resonances. We propose the two-photon ionization of atomic helium in order to demonstrate this remarkable phenomenon. The maximum elliptical dichroism could be used as a sensitive tool for analyzing the polarization state of photon beams produced by free-electron lasers.
Related Concept Videos
Ionization Energy
Maximum Deflection
The maximum deflection occurs at a specific point, known as point O, where the tangent to the deflection curve is horizontal. To find point O, the slope of the tangent at any...
Atomic Structure
Atomic Mass
Atomic Orbitals
Maximum Power Transfer
By substituting the entire circuit with...


