Fig. 5: Efficient switching for the miniaturized BIC polariton modes.
From: Exciton polariton condensation from bound states in the continuum at room temperature
a Schematic of the experimental setup. A signal beam (~Pth) and a gate beam (~0.2 Pth) with different time delays are applied. The gating beam excited half the width of the PhC lattice, while the signal beam excited the whole CsPbBr3 PhC lattice. b Schematic of the switching mechanism of the miniaturized BIC polariton modes. c Left panel: angle-resolved PL spectra of the miniaturized BIC polariton condensate emission at distinct time delays of 32 ps and −25 ps, respectively. Right panel: the far-field momentum-space images of M11 and M12 modes. d Stokes parameters S1−S3 map of M11 and M12 modes. e Intensity as a function of the time delay for the M12 mode. Inset: the corresponding far-field momentum-space images at time delays of −25, 0, and 15 ps, respectively.
