Optical response is a research area that focuses on studying how materials interact with light. This includes investigating how materials absorb, reflect, and transmit light, as well as how their optical properties can be manipulated or controlled. Researchers in this field use techniques such as spectroscopy, microscopy, and computational modeling to study how light interacts with different materials at the atomic and molecular levels. Understanding optical response is important for various applications, including designing new materials for optics, photonics, and sensing technologies.