Optical Methods in Chemistry: Materials Properties and Applications

This lecture covers optical methods in chemistry, focusing on materials properties and applications. Topics include electromagnetic waves in dielectric media, optical constants of various materials, dispersion, second and third-order non-linear optics, and self-focusing phenomena. The instructor discusses the Kramers-Kronig relation, susceptibility in different media, and examples of second and third harmonic generation. Additionally, the lecture explores optical parametric devices, the optical Kerr effect, and self-phase modulation. The session concludes with a detailed explanation of the relationship between polarization density and electric field in non-linear optics.