Amplitude of E-M wave (e.g. laser) in meters?

The wavelength of an electromagnetic wave is described in terms of distance (e.g. 633 nm). I understand this physically as the distance over which the repeating peak to peak oscillations occur.

I am trying to understand what the Amplitude's distance is? E.g. what is the typical distance (in m) the oscillations travel from average to peak (or trough)? I see it generally refereed to as intensity, but in the diagrams e.g.

I am trying to understand if the amplitude has some physical 'height' as well? For a regular He-Ne laser is it in the order of nano meters? picometers?

I ask because I am considering light scattering from small particles of say e.g. 1 nm. I understand the particle can be though of a new source of light of the same wavelength and amplitude of the incident light.

What confuses me is what if the amplitude is 'taller' than the max height of the particle? Wouldn't the electrons be 'stuck' at the top of the particle until the electric field vectors come on their way back down... essentially making the scattered wave that looks something like this:

I hope this makes sense. Thanks