Document Type
Article
Publication Date
10-21-2022
Abstract
A chiral analog of transient absorption spectroscopy, transient circular dichroism (TCD) spectroscopy is an emerging time-resolved method. Both spectroscopic methods can probe the electronic transitions of a sample, and TCD is additionally sensitive to the dynamic aspects of chirality, such as those induced by molecular excitons. Here, we develop a theoretical description of TCD for electronic multi-level models in which the pump pulse is linearly polarized and probe pulse is alternately left- and right-circularly polarized. We derive effective response functions analogous to those often used to describe other four-wave mixing methods and then simulate and analyze TCD spectra for three representative multi-level electronic model systems. We elaborate on the presence and detection of the spectral signatures of electronic coherences.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Information
Arpin, Paul C. and Turner, Daniel B.. (2022). "Perturbative Theoretical Model of Electronic Transient Circular Dichroism Spectroscopy of Molecular Aggregates". The Journal of Chemical Physics, 157(15), 154101. https://doi.org/10.1063/5.0119626