THE 2-MINUTE RULE FOR BIREFRINGENT CRYSTAL

For an optical part with some birefringence, one can specify the retardance, that's the real difference in phase shifts for the two polarization directions.The polarization dependence of the refractive index can have several different effects, a few of that happen to be remarkably vital in nonlinear optics and laser know-how:直光纤只有很小�