Disentangling enantiosensitivity from dichroism using bichromatic fields

Abstract

Photoionization of chiral molecules with two-color fields leads to photoelectron signals that are enantio-sensitive but nevertheless independent of the ellipticity of the field and thus robust with respect to changes of the two-color relative phase.

A geometric approach to decoding molecular structure and dynamics from photoionization of isotropic samples

“…This is a general condition independent of the polarization of the field and of the photon energies and will be explored in more detail in ref. 39. Now we will discuss two elementary applications of our methodology.…”

“…Replacing eqn ( 34), ( 37)- (39) in eqn ( 30) and ( 31) and using the orthonormality relations for the vector spherical harmonics, 59 we obtain…”

Ultrafast chirality: the road to efficient chiral measurements

“…synthetic chiral atoms, which are already oriented in space. These chiral atoms can also display PECD upon ionization with circularly polarized field [108,[168][169][170]. The experimental demonstration of PECD on chiral atoms will require efficient excitation schemes.…”

Structuring the local handedness of synthetic chiral light: global chirality versus polarization of chirality

“…Indeed, the enantio-sensitive response of chiral molecules to an elliptically or circularly polarized fields usually relies on weak magnetic or quadrupole effects which arise beyond the electric-dipole approximation 45 . A way around this fundamental limitation is to create a chiral measurement setup 46,47 , by recording the photoelectron angular distributions upon ionization with circular [48][49][50][51][52][53][54][55][56][57][58][59][60][61] , elliptical 62 , or two-colour [63][64][65][66] driving fields, measuring the phase of induced nonlinear polarization [67][68][69][70] , or creating chiral optical centrifuges [71][72][73] .…”