Fig. 3: Sample- and angle-dependence of the observed dynamics. | Communications Physics

Fig. 3: Sample- and angle-dependence of the observed dynamics.

From: Energy relaxation pathways between light-matter states revealed by coherent two-dimensional spectroscopy

Fig. 3: Sample- and angle-dependence of the observed dynamics.The alternative text for this image may have been generated using AI.

a The 2D spectrum of sample 1 at T = 100 fs and φ =  5°. b A schematic 2D plot visualises the labelling of the on-diagonal- and cross-peaks, and highlights the distinction between signals: polaritonic states (purple), excitonic state (red), excitonic-polaritonic cross-peaks (white). The arrows indicate how to read out the 2D spectrum with excitation on the x-axis and detection on the y-axis. c The 2D spectra of sample 2 at T = 80 fs and φ =  5° and d at φ = 20° show that the transient behaviour depends on the cavity tuning (by comparison to sample 1 in a), as well as where along k∥ the excitation/detection takes place. The data in a, c, and d is scaled by an arcsinh-function to visualise a larger dynamic range.

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