Two coherent beams are combined at a detector

PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Interference and diffraction · Interference and diffraction

Optics and Photonics, Ch Two-beam interference and interferometry

Problem

Two coherent beams are combined at a detector. One has irradiance

I_1 = 100

units and the other

I_2 = 1

unit (the units cancel in the ratio, so none need be stated). Find the fringe visibility

\mathcal{V}