Question

If in a birefracting crystal the magnitude $E_x$ and $E_y$ are equal and phase angle between the two is ${60}^0$ then the waves are

• A. linearly polarised
• B. plane polarised
• C. circularly polarised
• D. elliptically polarised

Answer 1

The correct option is D elliptically polarised

As both the component of electric field are present, it has to be either circularly or elliptically polarised.

For circularl polarisation, angle between both the components should be ${90}^o$

Since the angle between them is ${60}^o$, they are elliptically polarised.