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Title: Two-dimensional fluorescence-detected coherent spectroscopy with absolute phasing by confocal imaging of a dynamic grating and 27-step phase-cycling

We present a novel experimental scheme for two-dimensional fluorescence-detected coherent spectroscopy (2D-FDCS) using a non-collinear beam geometry with the aid of “confocal imaging” of dynamic (population) grating and 27-step phase-cycling to extract the signal. This arrangement obviates the need for distinct experimental designs for previously developed transmission detected non-collinear two-dimensional coherent spectroscopy (2D-CS) and collinear 2D-FDCS. We also describe a novel method for absolute phasing of the 2D spectrum. We apply this method to record 2D spectra of a fluorescent dye in solution at room temperature and observe “spectral diffusion.”.
Authors:
;  [1] ;  [2] ; ;  [3]
  1. Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94702 (United States)
  2. (United States)
  3. Department of Chemistry, University of California at Berkeley, Berkeley, California 94702 (United States)
Publication Date:
OSTI Identifier:
22304423
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 19; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; DIFFUSION; FLUORESCENCE; SOLUTIONS; SPECTRA; SPECTROSCOPY; TWO-DIMENSIONAL CALCULATIONS