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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20260309T114059Z
UID:https://www.mpsd.mpg.de/events/14106/42308
DTSTART:20180528T130000Z
DTEND:20180528T140000Z
CLASS:PUBLIC
CREATED:20180515T150836Z
DESCRIPTION:Over the recent years\, high-harmonic generation has establishe
 d itself as a promising spectroscopic technique. Notable examples include 
 the tomographic imaging of molecular wave functions [1]\, the tracking of 
 nuclear dynamics [2]\, and the reconstruction of the attosecond time-scale
  electron dynamics in molecules [3\, 4].All these applications\, however\,
  have been limited to laser fields with linear polarization. High harmonic
  generation has only recently been extended to circularly-polarized driver
 s by utilizing a technique known as bi-circular high-harmonic generation (
 BHHG) [5\,6\,7]. In this talk\, I will demonstrate the spectroscopic appli
 cations of this technique to the study of structure and dynamics of gas-ph
 ase atoms and molecules in a self-probing manner. I will start with an ana
 lysis of the helicity asymmetry of BHHG in noble-gas atoms and then procee
 d by illustrating how BHHG can be applied to study dynamical symmetry-brea
 king in a time-dependent manner in the context of rotational and vibration
 al molecular motion.Extension of high-harmonic generation to the regime of
  highly-elliptical fields opens up the way towards the study of chiral phe
 nomena in high-harmonic generation. In this work\, circular dichroism in t
 he range of 3-8 % is observed on randomly oriented methyl oxirane (C3H6O) 
 molecules in the gas phase. This chiral sensitivity is attributed to the s
 ub-cycle chiral electron dynamics involving excited states of the cation t
 hat take place during the electron continuum propagation. Finally\, I will
  present a study of time-dependent chirality based on following the tempor
 al evolution of circular dichroism during the course of an ultrafast photo
 dissociation reaction.\nVortragende(r): Denitsa Baykusheva
LAST-MODIFIED:20180515T150836Z
LOCATION:CFEL (Bldg. 99)\, Raum: Seminar Room I\, EG.076
ORGANIZER;CN=Andrea Cavalleri:mailto:
SUMMARY:MPSD Seminar: High-harmonic spectroscopy using bi-elliptical fields
URL;VALUE=URI:https://www.mpsd.mpg.de/events/14106/42308
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