Abstract
A non-centrosymmetric sample submitted to circularly polarized light beams shows a different absorption depending on the helicity of the light. This effect, known as circular dichroism, provides a powerful differential structural probe of matter, may it be for solid state physics (e.g. using magnetic circular dichroism), or for gas phase studies (e.g. using natural circular dichroism). These second order effects are usually monitored in the Visible-IR range. They however have a first order counterpart in the XUV range: when angularly resolving the photoionization of chiral molecules with synchrotron XUV light beams of opposite helicities, a large backward/forward asymmetry of the photoionization distribution was reported [1]. This phenomenon, christened Photo-Electron Circular Dichroism (PECD), carries invaluable information about the geometry of the species involved [2, 3].
© 2015 IEEE
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