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Fifth-order two-quantum absorptive two-dimensional electronic spectroscopy of CdSe quantum dots.
- Source :
- Journal of Chemical Physics; 12/21/2020, Vol. 153 Issue 23, p1-14, 14p
- Publication Year :
- 2020
-
Abstract
- Two-quantum variants of two-dimensional electronic spectroscopy (2DES) have previously been used to characterize multi-exciton interactions in molecules and semiconductor nanostructures though many implementations are limited by phasing procedures or non-resonant signals. We implement 2DES using phase-cycling to simultaneously measure one-quantum and two-quantum spectra in colloidal CdSe quantum dots. In the pump–probe geometry, fully absorptive spectra are automatically acquired by measuring the sum of the rephasing and nonrephasing signals. Fifth-order two-quantum spectroscopy allows for direct access to multi-exciton states that may be obscured in excited state absorption signals due to population relaxation or third-order two-quantum spectra due to the non-resonant response. [ABSTRACT FROM AUTHOR]
- Subjects :
- SEMICONDUCTOR nanocrystals
SPECTROMETRY
EXCITED states
RABI oscillations
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 153
- Issue :
- 23
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 147728431
- Full Text :
- https://doi.org/10.1063/5.0021381