Non-Centrosymmetric $\gamma$-Phase GaS Nanobelts for On-Chip Nonlinear Photonic Applications

Yukihiro Endo, Masato Takiguchi, Yoshiaki Sekine +2

Second-order nonlinear optical processes in van der Waals (vdW) semiconductors offer a compelling route toward compact, integrable photon-conversion platforms. Among III-VI vdW sem…