Optical Engineering: Photonic Crystals and Holography

This lecture covers the principles of optical engineering, focusing on photonic crystals and holography. It explains the concept of group velocity, the behavior of light in periodic microstructures, and the recording of amplitude and phase of waves. The instructor discusses the observation of 'ultra-slow light' in photonic crystal waveguides and the applications of holography in reconstructing 3D objects. Additionally, the lecture explores digital holography, holographic displays, and holographic memory storage techniques. It also delves into Fourier optics, diffraction by periodic surfaces, and the functioning of diffraction gratings in spectrometry.