Fig. 5: Ultrafast switching of a double BL microcavity. | Nature Communications

Fig. 5: Ultrafast switching of a double BL microcavity.

From: Femtosecond switching of strong light-matter interactions in microcavities with two-dimensional semiconductors

Fig. 5

a Sketch of the microcavity embedding a double BL of MoS2. b Static 1-R spectra of the single BL compared to the double BL microcavity, showing a redshift of the MPB-LPB and an increased polariton splitting in the latter. c 1-R spectra of the double BL microcavity excited with pump pulses at 1.91 eV and 8.25 pJ, taken at different pump-probe delays. d Color map of the 1-R spectra of the double BL microcavity versus pump-probe delay showing the ultrafast collapse and later revival of the SC. The orange (blue) line in overlay displays the fitted peak energy of the LPB (MPB) or the weakly coupled cavity mode. e Effective on/off extinction ratio calculated from the 1-R spectra taken at −350 fs and 350 fs, for the single (blue line) and double BL cavity (red line).

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