Two waves of different wavelengths λ1= 1.5μm, λ2 = 1.63μm, are combined in free space Et = 1.5cos(k1x - ω1t) + 2cos(k2x -ω2t)
Find the beat frequency
(ω1- ω2) = 2ωm=beat frequency
E02 = 4E012cos2(kmx - ωmt)
The Attempt at a Solution
I am quite stuck on this problem. Can I get a numerical solution for question with what I've been given?