  In addition to their strong nonlinear optical response, transition metal
dichalcogenides (TMDCs) possess a high refractive index in the visible and
infrared regime. Therefore, by patterning those TMDCs into dielectric
nanoresonators, one can generate highly confined electromagnetic modes.
Controlled fabrication of TMDC nanoresonators does not only enhance the
material's intrinsic nonlinear response, but also allows for spatially shaping
the emission via nanoresonator arrays. Here we fabricate patterned WS2 disks
that support a high internal resonant electric field and show strong
enhancement of second harmonic (SH) generation in the visible regime. In
addition, we assemble the WS2 disks in arrays to spatially direct the coherent
SH emission, in analogy to phased array antennas. Finally, we investigate and
discuss drastic differences in the areal emission origin and intensity of the
measured SH signals, which we find to depend on material variations of the used
bulk WS2.
