“…For well-defined device geometry, the nonlinearity required depends on the switching power and attenuation. In general, for all-optical switching, there is a trade-off among nonlinearity, attenuation coefficient, response time, switching power, and device geometry, neglecting other factors, such as mechanical and chemical stabilities, which may be critical under certain conditions [7]. Organic NLO crystals with centrosymmetric space group plays a major role in third-harmonic generation (THG) finds a wide range of applications in optical power limiting for sensor production, optical signal processing, optical communication networks and integrated optics.…”