I am thinking about the property of circular polarization of light. I have two circularly polarized beams, one is rounding in positive direction, other is negative. My task is to figure out:
- if those two polarized beams are circular (I can use circular-polarizer detector to do so).
- i need to verify if those two polarized beams are just opposite. I don't have any idea but I am thinking shall I add those two beams, if they are circular but opposite, then the amplitude of the superposed beam should real (since the imaginary part cancel out). However, at this step, I don't know how to use that information to determine if the beams are two opposite circular polarization?
- To add two beams, will it work by just shining two beams onto the same photo detector? or I have to use some adder to add the beams first?