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

Augulis, Ramunas LU and Zigmantas, Donatas LU (2011) In Optics Express 19(14). p.13126-13133
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
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
19
issue
14
pages
13126 - 13133
publisher
OSA
external identifiers
  • wos:000292876500073
  • scopus:79959907586
ISSN
1094-4087
DOI
10.1364/OE.19.013126
language
English
LU publication?
yes
id
be776337-12fc-4706-b748-364514e1f498 (old id 2161896)
date added to LUP
2011-09-21 11:12:25
date last changed
2017-10-01 04:15:15
@article{be776337-12fc-4706-b748-364514e1f498,
  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       = {Augulis, Ramunas and Zigmantas, Donatas},
  issn         = {1094-4087},
  language     = {eng},
  number       = {14},
  pages        = {13126--13133},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {Two-dimensional electronic spectroscopy with double modulation lock-in detection: enhancement of sensitivity and noise resistance},
  url          = {http://dx.doi.org/10.1364/OE.19.013126},
  volume       = {19},
  year         = {2011},
}