Time-Resolved Ultrafast Transient Polarization Spectroscopy to Investigate Nonlinear Processes and Dynamics in Electronically Excited Molecules on the Femtosecond Time Scale

Autor:	Thurston, Richard, Brister, Matthew M., Belkacem, Ali, Weber, Thorsten, Shivaram, Niranjan, Slaughter, Daniel S.
Rok vydání:	2019
Předmět:	Physics - Chemical Physics
Zdroj:	Review of Scientific Instruments 91, 053101 (2020)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.5144482
Popis:	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. Comment: 12 pages, 4 figures. Changes from previous version: added panel labels to figures 3-4
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1912.12124 Zobrazit plný text záznamu View this record from Arxiv