Open AccessRapid-scan coherent 2D fluorescence spectroscopy
Author(s) -
Simon Draeger,
Sebastian Roeding,
Tobias Brixner
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.003259
Subject(s) - optics , fluorescence , spectroscopy , signal (programming language) , fluorescence spectroscopy , materials science , phase (matter) , modulation (music) , population , noise (video) , pulse (music) , cresyl violet , physics , computer science , image (mathematics) , acoustics , medicine , staining , demography , pathology , quantum mechanics , artificial intelligence , sociology , detector , programming language
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 × 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.