Affiliation:
1. Department of Molecular Spectroscopy, Max Planck Institute for Polymer Research , Ackermannweg 10, D-55128 Mainz, Germany
Abstract
Terahertz molecular motions are often probed by high-frequency molecular oscillators in different types of non-linear vibrational spectroscopy. Recently developed two-dimensional terahertz-infrared-visible spectroscopy allows direct measuring of this coupling and, thus, obtaining site-specific terahertz vibrational spectrum. However, these data are affected by the intensity and phase of the employed laser pulses. In this work, we develop a method of extracting sample response—representing solely physical properties of a material—from experimental spectra. Using dimethyl sulfoxide as a model molecule to verify this method, we measure the coupling between C–H stretch vibration of its methyl groups and terahertz intramolecular twist and wagging modes.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy
Cited by
4 articles.
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