Adjustable even and odd harmonic radiation characteristics of crystal target by strain engineering

The study on solid harmonics has been in focus in the fields of strong field ultrafast physics, condensed matter physics and nonlinear optics. Different from the traditional scheme of light field control, starting from the tuning of target material property, researchers in Nanjing have revealed the distinct anisotropic odd/even harmonic features from the monolayer aluminum nitride by strain under the interaction of strong laser.