Đo lường quang học P9

Photoelasticity and Polarized Light Up to now we have treated the light field as a scalar quantity. The electromagnetic field, however, is a vector quantity which is perpendicular to the direction of propagation and with a defined orientation in space. This property is known as the polarization of light. In our treatments of interferometry and holography it is silently understood that the interfering waves have the same polarization. In practice, however, this condition is fulfilled to a greater or lesser degree....