# Linearly polarised light through half and quarter wave plate

## Homework Statement

A half wave plate and a quarter wave plate are placed between a Polariser and an analyser .All of these are parallel to each other and perpendicular to the direction of propagation of unpolarised incident light.The optic-axis of the half-wave plate makes an angle 300 with respect to the pass-axis of polariser 1 and that of the quarter wave plate is parallel to the pass axis of polariser 1.

Q1.Determine the state of polarisation of light after passing through I)the half wave plate II)the quarter wave plate.

Q2. What should be the orientation of the pass axis of the polariser 2 wrt to that of polariser 1 such that the intensity of the light emerging from polariser 2 is maximum?

N/A

## The Attempt at a Solution

Q1. As the optic-axis of the half-wave plate makes an angle 300 with respect to the pass-axis of polariser 1,after passing through the half wave plate the linearly polarised light wight will be 2 x 300 = 600 phase-shifted.
This linearly polarised light is incident on the quarter wave plate and gives an elliptically polarised light.