Extended Data Fig. 4: Determination of WSe2 and WS2 flake alignment.
From: Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices

Polarization-dependent SHG signal on monolayer WSe2 (red circles) and WS2 (black circles) regions of device D1 and corresponding fittings (red and black curves, respectively).