2D electronic spectroscopy paper accepted for publication

Congratulations to Camilla and Caleb of the acceptance of their two electronic spectroscopy (2DES) paper in the Journal of Physical Chemistry A! The paper details the coupling of an ultrabroadband laser source generated with a hollow-core fibre, compressed to 8 fs pulse duration, with a boxcars 2DES interferometer constructed from only conventional optics. The resulting ultra-broad bandwidth and high temporal resolution allow for superior spectral coverage of the typically broad molecular line shapes in the near-IR/visible region in room temperature solutions and the exploration of the excited state dynamics at the earliest time epoch in complex systems. For the first time in a degenerate broadband 2DES experiment, we demonstrate the implementation of full-wavelength reference detection to correct for wavelength-dependent laser intensity fluctuations. The net result is a 4–5x increased signal-to-noise, allowing for highly sensitive 2DES measurements, and the exploration of molecular vibronic transitions in a model system. This new platform paves the way for highly sensitive measurements of precious samples at lower than usual concentrations. The article is available to read online.

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