Extended Data Fig. 3: Spatial mapping of PL.
From: Interlayer exciton laser of extended spatial coherence in atomically thin heterostructures

The normalized intensity of PL from the device is shown as a function of position. Spectral filters centred around their respective exciton peak energies were applied for each image. The white contours mark the regions of heterobilayer (a), MoSe2 (b) and WSe2 (c).