MAGNETO-OPTICAL CRYSTAL - AN OVERVIEW

For an optical part with some birefringence, you can specify the retardance, and that is the difference in stage shifts for The 2 polarization directions.The decrease area on the Michel-Levy chart (x-axis) marks the orders of retardation in multiples of about 550 nanometers. The realm in between zero and 550 nanometers is known as the initial order