University of Illinois Urbana-Champaign

Pulse Induced Dark State Of Acetylene

Aerts, Antoine

Content Files
MH09_1.pptx
6167.pdf

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https://hdl.handle.net/2142/116652

Description

Title
Pulse Induced Dark State Of Acetylene
Author(s)
Aerts, Antoine
Contributor(s)
  • Vaeck, Nathalie
  • Vander Auwera, Jean
  • Gorza, Simon Pierre
  • Kockaert, Pascal
Issue Date
2022-06-20
Keyword(s)
Mini-symposium: Spectroscopy meets Chemical Dynamics
Abstract
We simulate laser-induced dynamics in acetylene (\chem{C_2H_2}) using fully-experimental structural parameters. The rotation-vibration energy structure, including anharmonicities, is defined by the global spectroscopic Hamiltonian for the ground electronic state of \chem{C_2H_2} built from the extensive high resolution spectroscopy studies on the molecule, transition dipole moments from intensities, and effects of the (inelastic) collisions are parametrized from line broadenings using the relaxation matrix [J. Chem. Phys. \textbf{154}, 144308 (2021)]. The approach, based on an effective Hamiltonian outperforms today's \textit{ab initio} computations both in terms of accuracy and computational cost, however, is limited to a few small molecules. With such accuracy, the Hamiltonian permits to study the inside machinery of theoretical pulse shaping [J. Chem. Phys. \textbf{156}, 084302 (2022)] for laser quantum control. With an adequate pulse shaping technique (in mid-IR) based on ``super-Gaussian" pulses, we show a realistic and performant path to the population of a ``dark" ro-vibrational state in \chem{C_2H_2}.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Handle URL
https://hdl.handle.net/2142/116652
DOI
https://doi.org/10.15278/isms.2022.MH09
Copyright and License Information
Copyright 2022 held by the authors

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Abstracts & Presentations - 2022 International Symposium on Molecular Spectroscopy PRIMARY