Full Field Optical Metrology methods and techniques have been in existence since the first interferometry experiments by Thomas Young in the 19th Century. This book introduces non-contact optical techniques based on the speckle effect in more detail. It also covers surface metrology and explores other characteristics related to the surface, such as strain, stress, vibration, contouring, and its x, y, and z displacements (coupled as vectors in 2D and 3D). In addition, the book presents modern methods for phase retrieval, optical coherence tomography (OCT), and the moir