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Time-Resolved Ultrafast Transient Polarization Spectroscopy to Investigate Nonlinear Processes and Dynamics in Electronically Excited Molecules on the Femtosecond Time Scale
- Source :
- Review of Scientific Instruments 91, 053101 (2020)
- Publication Year :
- 2019
-
Abstract
- We report a novel experimental technique to investigate ultrafast dynamics in photoexcited molecules by probing the third-order nonlinear optical susceptibility. A non-colinear 3-pulse scheme is developed to probe the ultrafast dynamics of excited electronic states using the optical Kerr effect by time-resolved polarization spectroscopy. Optical heterodyne and optical homodyne detection are demonstrated to measure the third-order nonlinear optical response for the S1 excited state of liquid nitrobenzene, which is populated by 2-photon absorption of a 780 nm 35 fs excitation pulse.<br />Comment: 12 pages, 4 figures. Changes from previous version: added panel labels to figures 3-4
- Subjects :
- Physics - Chemical Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Review of Scientific Instruments 91, 053101 (2020)
- Publication Type :
- Report
- Accession number :
- edsarx.1912.12124
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/1.5144482