In this dataset, some works done in both nonlinear and linear optics. For the second-order nonlinear effect, it includes second harmonic generation and photo-drag effects, for the second harmonic generation we focus on the interference between the TMDC, and for the photo-drag effect we mainly study the photocurrent generation of the gold nanoholes with the phase-sensitive technique using existing facilities. For the linear optical one, the enhancement of the plasmon-induced transparency effect by complex frequency synthesis would be introduced and combined with its related applications in molecular detection and sensing.