In: Physics
Is commercial laser a polarized source. How do you confirm that if any light source given to you is polarized or not?
Yes, commercial laser is a polarized source.
We could test whether or not light source is polarized by getting a polarizing film (for example polarized sunglasses). Shine the light through the film while rotating the film. If the intensity of the transmitted beam changes when you rotate the film, then it is, at the least, partially polarized.