Question

Given the intensity of photons and the wavelength, how can I calculate the magnitudes of the electric and magnetic fields of the radiation? (Intensity=1kW/m^2, and the wavelength is 550nm in this case).

Answer 1

good question

Answer 2

You're not learning about the Poynting vector, I guess..?

Answer 3

I am. I think I got it though. I used the Poynting vector average of \[S_{avg}=Intensity=1/2*c*n*\epsilon _{o}*E _{x}^{2}\] and solved for E. Feels strange that I haven't used wavelength at all, but this seems correct. I am assuming harmonic oscillation so E=B.