Fig. 2: Optical properties of TMDC polaritons in a lattice. | Nature Communications

Fig. 2: Optical properties of TMDC polaritons in a lattice.

From: Tunable exciton-polaritons emerging from WS2 monolayer excitons in a photonic lattice at room temperature

Fig. 2

a Sketch of the open cavity device with the 1D photonic lattice implemented in the top mirror. b–d Momentum-resolved photoluminescence spectrum from one-dimensional polariton lattices (see the sketch of the photonic potential in the top part of each panel) with increasing diameter (vertical arrow) to center-center distance (horizontal arrow) ratio D/A = 1.4, 2.0 and 2.5, respectively. The dispersion relation maps are encoded in a normalized, false-colour scale. The dashed lines are theory fittings to the experimental data. Experimental data are recorded with a pump power of ~100 µW and an integration time of 480 s. e–g Profiles of the Bloch modes with one (BM1) or three field maxima (BM3) in transverse to the lattice structure.

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