HELPING THE OTHERS REALIZE THE ADVANTAGES OF BIREFRINGENT CRYSTAL

For an optical part with a few birefringence, you can specify the retardance, which is the real difference in period shifts for The 2 polarization directions.The reduced segment from the Michel-Levy chart (x-axis) marks the orders of retardation in multiples of somewhere around 550 nanometers. The region between zero and 550 nanometers is known as