A qBIC WS2 crescent metasurface with resonance at twice the exciton energy yields 98-fold stronger SHG than monolayer WS2, 4 orders of magnitude stronger than unpatterned film, tunable by temperature and polarization.
Low- loss, high-index dielectric metasurfaces made of Si (9), Ge (10) and III-V semiconductors (11,
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Dynamic Control of Nonlinear Emission by Exciton-Photon Coupling in WS2 Metasurfaces
A qBIC WS2 crescent metasurface with resonance at twice the exciton energy yields 98-fold stronger SHG than monolayer WS2, 4 orders of magnitude stronger than unpatterned film, tunable by temperature and polarization.