Controlling the Efficiency of Second Harmonic Generation from a Metasurface Due to Its Mechanical Stretching

Second harmonic generation (SHG) using metasurfaces with controlled optical properties is an active area of research in photonics and optics. The work shows that the use of metasurfaces with controlled optical properties makes it possible to control and enhance SHG. For example, a change in the geometry of the metasurface can lead to an increase in the nonlinear polarizability of the substance and, consequently, to more efficient generation of the second harmonic. In addition, metasurfaces can be designed in such a way as to ensure phase consistency of the second harmonic wave, which also helps to increase the SHG efficiency. Thus, the use of metasurfaces with controlled optical properties represents a promising approach for creating efficient and compact frequency-doubled light sources. This could have important practical applications in optical communications, laser technology, and other areas that require highly efficient generation of light in the visible and near-infrared ranges. #CSOC1120