In the chiro-optical phenomenon known as photoelectron circular dichroism, the angular distribution of electrons ionized from chiral molecules by circularly polarized light pulses has been found to be anti-symmetric with respect to the direction of the light propagation. To study this phenomenon, chiral molecules were multiphoton ionized with a femtosecond laser in our laboratory. Using a simple stereo-detection setup, direct measurements of the asymmetry for the exemplar aromatic chiral molecule 1-phenylethanol were made using 260 nm pulses produced at a rate of 1 MHz. It was found that the asymmetry had a linear dependence on Stokes' S3 parameter indicating that the photoelectron circular dichroism is due to a single photon process from the excited state of the molecule. This is in contrast to previous and new results for camphor where a more complex dependence on S3 suggested that selective excitation of molecules with certain orientations was influential.
|Title of host publication||Journal of Physics Conference Series|
|Publication status||Published - 23 Aug 2019|
|Event||24th International Conference on Spectral Line Shapes, ICSLS 2018 - Dublin, Ireland|
Duration: 17 Jun 2018 → 22 Jun 2018
|Name||Journal of Physics: Conference Series|
|Publisher||IOP Publishing Ltd.|
|Conference||24th International Conference on Spectral Line Shapes, ICSLS 2018|
|Period||17/06/2018 → 22/06/2018|
ASJC Scopus subject areas
- Physics and Astronomy(all)
FingerprintDive into the research topics of 'Asymmetric photoelectron emission from chiral molecules using a high repetition rate laser'. Together they form a unique fingerprint.
Student thesis: Doctoral Thesis › Doctor of PhilosophyFile