Fig. 5 | Light: Science & Applications

Fig. 5

From: Strong nonlinear optical processes with extraordinary polarization anisotropy in inversion-symmetry broken two-dimensional PdPSe

Fig. 5

Polarized SHG spatial imaging from anisotropic few-layer PdPSe. a Optical microscopic images of the PdPSe flakes; A: 6 L, B: 7 L, C: 8 L, D: 9 L; Sample 1 and Sample 2 are in the left and right of the blue dashed line, respectively; Red dashed arrow represents the excitation polarization orientation, which has angles of θ1 and θ2 with respect to Sample 1 and Sample 2, respectively; Spatial imaging of the SHG intensity is marked by the red rectangle. Scale bar: 10 μm. b–i SHG spatial imaging of the PdPSe flakes excited by the 980-nm laser with different polarizations. Scale bar: 10 μm

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