ABSTRACT
Interference occurs when two free-space beams with the same direction of polarization overlap at the same frequency. An intensity distribution formed on a screen by the interference of two plane waves with angular frequency -e0, which are propagating in the z-direction. The light that is repeatedly reflected in between the two translucent mirrors generates a reinforced interference at the exit end, and a standing wave is formed inside the resonator. In the Fabry-Perot interferometer, the emitted light is configured from the interference of a large number of reflected light components bouncing back and forth inside the resonator, so a slight difference in the phases of each of the reflected light components will work strongly toward weakening the interference. In the multiplayer film interference, the interference overlaps in between various boundaries, and the reflex pathway has to be considered one by one, making the analysis difficult.
