Compressed Sensing for Reconstructing Coherent Multidimensional Spectra
Wang, Zhengjun LU ; Lei, Shiwen LU ; Karki, Khadga Jung LU ; Jakobsson, Andreas LU
and Pullerits, Tönu
LU
(2020)
In Journal of Physical Chemistry A
124(9).
p.1861-1866
- Abstract
We apply two sparse reconstruction techniques, the least absolute shrinkage and selection operator (LASSO) and the sparse exponential mode analysis (SEMA), to two-dimensional (2D) spectroscopy. The algorithms are first tested on model data, showing that both are able to reconstruct the spectra using only a fraction of the data required by the traditional Fourier-based estimator. Through the analysis of the sparsely sampled experimental fluorescence-detected 2D spectra of LH2 complexes, we conclude that both SEMA and LASSO can be used to significantly reduce the required data, still allowing one to reconstruct the multidimensional spectra. Of the two techniques, it is shown that SEMA offers preferable performance, providing more accurate... (More)
We apply two sparse reconstruction techniques, the least absolute shrinkage and selection operator (LASSO) and the sparse exponential mode analysis (SEMA), to two-dimensional (2D) spectroscopy. The algorithms are first tested on model data, showing that both are able to reconstruct the spectra using only a fraction of the data required by the traditional Fourier-based estimator. Through the analysis of the sparsely sampled experimental fluorescence-detected 2D spectra of LH2 complexes, we conclude that both SEMA and LASSO can be used to significantly reduce the required data, still allowing one to reconstruct the multidimensional spectra. Of the two techniques, it is shown that SEMA offers preferable performance, providing more accurate estimation of the spectral line widths and their positions. Furthermore, SEMA allows for off-grid components, enabling the use of a much smaller dictionary than that of the LASSO, thereby improving both the performance and the lowering of the computational complexity for reconstructing coherent multidimensional spectra.
(Less)
- author
- Wang, Zhengjun
LU
; Lei, Shiwen
LU
; Karki, Khadga Jung
LU
; Jakobsson, Andreas
LU
and Pullerits, Tönu
LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry A
- volume
- 124
- issue
- 9
- pages
- 6 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:32045527
- scopus:85080082755
- ISSN
- 1089-5639
- DOI
- 10.1021/acs.jpca.9b11681
- language
- English
- LU publication?
- yes
- id
- df63acab-1f63-420f-995a-02ccc20e934a
- date added to LUP
- 2021-01-12 15:17:58
- date last changed
- 2024-06-14 07:26:56
@article{df63acab-1f63-420f-995a-02ccc20e934a,
abstract = {{<p>We apply two sparse reconstruction techniques, the least absolute shrinkage and selection operator (LASSO) and the sparse exponential mode analysis (SEMA), to two-dimensional (2D) spectroscopy. The algorithms are first tested on model data, showing that both are able to reconstruct the spectra using only a fraction of the data required by the traditional Fourier-based estimator. Through the analysis of the sparsely sampled experimental fluorescence-detected 2D spectra of LH2 complexes, we conclude that both SEMA and LASSO can be used to significantly reduce the required data, still allowing one to reconstruct the multidimensional spectra. Of the two techniques, it is shown that SEMA offers preferable performance, providing more accurate estimation of the spectral line widths and their positions. Furthermore, SEMA allows for off-grid components, enabling the use of a much smaller dictionary than that of the LASSO, thereby improving both the performance and the lowering of the computational complexity for reconstructing coherent multidimensional spectra.</p>}},
author = {{Wang, Zhengjun and Lei, Shiwen and Karki, Khadga Jung and Jakobsson, Andreas and Pullerits, Tönu}},
issn = {{1089-5639}},
language = {{eng}},
number = {{9}},
pages = {{1861--1866}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Journal of Physical Chemistry A}},
title = {{Compressed Sensing for Reconstructing Coherent Multidimensional Spectra}},
url = {{http://dx.doi.org/10.1021/acs.jpca.9b11681}},
doi = {{10.1021/acs.jpca.9b11681}},
volume = {{124}},
year = {{2020}},
}