Journal
OPTICS EXPRESS
Volume 25, Issue 4, Pages 3259-3267Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.003259
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Funding
- European Research Council (ERC) Consolidator Grant MULTISCOPE
- European Cooperation in Science and Technology (COST) Action [MP1403]
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We developed pulse-shaper-assisted coherent two-dimensional (2D) electronic spectroscopy in liquids using fluorescence detection. A customized pulse shaper facilitates shot-to-shot modulation at 1 kHz and is employed for rapid scanning over all time delays. A full 2D spectrum with 15 x 15 pixels is obtained in approximately 6 s of measurement time (plus further averaging if needed). Coherent information is extracted from the incoherent fluorescence signal via 27-step phase cycling. We exemplify the technique on cresyl violet in ethanol and recover literature-known oscillations as a function of population time. Signal-to-noise behavior is analyzed as a function of the amount of averaging. Rapid scanning provides a 2D spectrum with a root-mean-square error of < 0.05 after 1 min of measurement time. (C) 2017 Optical Society of America
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