DETAILS, FICTION AND MAGNETO-OPTICAL CRYSTAL

For an optical part with a few birefringence, you can specify the retardance, that is the difference in period shifts for The 2 polarization directions.The decreased area with the Michel-Levy chart (x-axis) marks the orders of retardation in multiples of somewhere around 550 nanometers. The area in between zero and 550 nanometers is named the prima