# Is there a way for light to be reflected out of the usual plane of incident?

Is it possible for use to apply a potential or magnetic field to the surface of the media, so that the light being reflected out of the plane of incident?

i.e. Compare to an initial "vertical" plane of incident normal to the surface, the reflected beam also had a $$\phi$$ angle changes in terms of polar sphere coordinate.

(Please ignore diffraction for now, just simple reflection. Use a beam of single wavelength.)

• I think you are missing the point. It doesn't matter weak/strong, none of your solution included interaction term, thus did not answer the question. In EMM, the description was through the changes of propagation vector $k$, in dynamics and quantum, you didn't explain why the momentum remain the same bases as well. – user9976437 Apr 2 at 14:04