Open AccessGlobal analysis of coherence and population dynamics in 2D electronic spectroscopy
Author(s) -
Andrea Volpato,
Luca Bolzonello,
Elena Meneghin,
Elisabetta Collini
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.024773
Subject(s) - coherence (philosophical gambling strategy) , spectroscopy , computer science , population , optics , projection (relational algebra) , physics , algorithm , quantum mechanics , demography , sociology
2D electronic spectroscopy is a widely exploited tool to study excited state dynamics. A high density of information is enclosed in 2D spectra. A crucial challenge is to objectively disentangle all the features of the third order optical signal. We propose a global analysis method based on the variable projection algorithm, which is able to reproduce simultaneously coherence and population dynamics of rephasing and non-rephasing contributions. Test measures at room temperature on a standard dye are used to validate the procedure and to discuss the advantages of the proposed methodology with respect to the currently employed analysis procedures.