In recent years, we have seen the embryo of Industry 4.0 which has been promoting manufacturing processes towards the future with better efficiency, higher accuracy and better reliability. However, manufacturing precision has been restricted by the precision of metrology and material characterization. In other words, one can only manufacture parts...
Optical interferometry is a powerful technique which has been widely utilized for well over a century in making the world’s most precise measurements. By measuring how the interference between two waves is affected by a physical process, one can deduce the magnitude of this process. Because the wavelength of a...