${\chi }^{(2)}$-Induced Artifact Overwhelming the Third-Order Signal in 2D Raman-THz Spectroscopy of Non-Centrosymmetric Materials

Seyyed Jabbar Mousavi, Megan F. Biggs, Jeremy A. Johnson +2

Through comprehensive data analysis, we demonstrate that a ${\chi }^{(2)}$-induced artifact, arising from imperfect balancing in the conventional electro-optic sampling (EOS) detection s…