Two-dimensional electronic spectroscopy with double modulation lock-in detection: enhancement of sensitivity and noise resistance

Research output: Contribution to journalArticle

Bibtex

@article{be77633712fc4706b748364514e1f498,
title = "Two-dimensional electronic spectroscopy with double modulation lock-in detection: enhancement of sensitivity and noise resistance",
abstract = "In many potential applications of two-dimensional (2D) electronic spectroscopy the excitation energies per pulse are strictly limited, while the samples are strongly scattering. We demonstrate a technique, based on double-modulation of incident laser beams with mechanical choppers, which can be implemented in almost any non-collinear four wave mixing scheme including 2D spectroscopy setup. The technique virtually eliminates artifacts or {"}ghost{"} signals in 2D spectra, which arise due to scattering and accumulation of long-lived species. To illustrate the advantages of the technique, we show a comparison of porphyrin J-aggregate 2D spectra obtained with different methods following by discussion. (C) 2011 Optical Society of America",
author = "Ramunas Augulis and Donatas Zigmantas",
note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)",
year = "2011",
doi = "10.1364/OE.19.013126",
language = "English",
volume = "19",
pages = "13126--13133",
journal = "Optics Express",
issn = "1094-4087",
publisher = "OSA",
number = "14",

}