Photonic materials interact with light in a controlled way, and optical materials are used to manipulate light for a variety of applications. These materials can transmit, reflect, absorb, or emit light, and they often have unique optical properties such as birefringence, nonlinearity, or luminescence. Photonic materials are used in lasers, LEDs, solar cells, and optical fibers. Optical materials are found in lenses, mirrors, filters, and other optical components used in photography, telecommunications, and medical imaging.