Question

the phase diffierent introduced vy a retardation plate between the O ray and Eray for the positive crystal is​

Answer 1

Explanation:

This plate is known as the retardation plate as it retards the motion of one of the rays. Explanation: A quarter wave plate is a uniaxial, doubly refracting crystal plate. It induces a phase difference of π/2 between the O-ray and the E-ray.

Answer 2

The distinctive category presented by the retraction plate between the O ray and Eray of the fine crystal is:

• Once the plate has been cut, then the phase (Δφ) difference between the radiation and the e-ray during the broadcast is presented as follows.

• Here the o-ray represents the regular ray and the e-ray represents the supernatural ray.
• Light passing through calcite crystal is divided into two rays.

• A duplicate uni-axial crystal plate of the same thickness with a sloping surface parallel to the optic axis and capable of producing a definite phase difference between a normal and an irregular beam, is called a phase reversal plate.

• In calcite crystal, the velocity of the E-ray (Ve) is greater than that of the O-ray.

• The difference in the time taken by these waves to cross the thickness of the plated’ can be given as: ΔT = To-Te 1 Here To and Te the time taken by O-ray and E-ray to cross.
• Thick plate d. Ku = d / Vo. Te = d / Ve. ⇒ΔT = (d / VO) - (d / Ve).