Journal
OPTICS EXPRESS
Volume 21, Issue 13, Pages 15904-15911Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.015904
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Funding
- Austrian Science Fund (FWF): START project [Y 631-N27]
- Austrian Science Fund (FWF) [Y631] Funding Source: Austrian Science Fund (FWF)
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We report an experimental design for two-dimensional electronic spectroscopy (2D-ES) that avoids the need to measure notoriously weak pump-probe spectra. Retaining a fully non-collinear folded boxcar geometry, the described layout replaces pump-probe with heterodyned transient grating (het-TG). The absorptive component of the het-TG signal is measured directly, following a straightforward optimization routine. The use of het-TG achieves an improvement in signal to noise ratio by almost two orders of magnitude. As a result, 2D-ES-signals down to 0.5% can be clearly resolved. (C) 2013 Optical Society of America
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