Question

Half wave plate generate the phase difference

Answer 1

Answer:

The most common types of waveplates are quarter-wave plates (λ/4 plates) and half-wave plates (λ/2 plates), where the difference of phase delays between the two linear polarization directions is π/2 or π, respectively, corresponding to propagation phase shifts over a distance of λ / 4 or λ / 2, respectively.

Explanation:

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Answer 2

Half wave plate generate the phase difference

Explanation:

• If linearly polarized light is incident on quarter wave plate other than 45° to the optic axis then it produce elliptical polarized light.
• Phase difference of π between the O-ray and the E-ray is called a half wave plate.
• A half- wavelength is very helpful in rotating the plane of polarization from a polarized laser to any other desired plane(especially if the laser is too large to rotate).
• By selecting value of 'd', phase difference(ΔФ) between two emerging plane polarized waves can be π/2 for quarter wave plate and it is π for half wave plate.
• By picking the right thickness we can change the relative phase by exactly 90o.
• No intensity is lost passing through the QWP!
• A quarter wave plate produces a phase difference between e-ray and o-ray.
• But the intensity is changed for plane polarized light.