Thanks for a wonderful refresher course in Fourier optics. It was 30 years ago when I first learned this stuff. I've got a little rusty since. What proportion of the input energy is scattered into the evancent field?
Can you detect evanescent waves by keeping the detector very close (few nm's) away from the aperture? I suppose such an experiment could be done in labs.
Beautiful explanation
Thanks for a wonderful refresher course in Fourier optics. It was 30 years ago when I first learned this stuff. I've got a little rusty since. What proportion of the input energy is scattered into the evancent field?
Can you detect evanescent waves by keeping the detector very close (few nm's) away from the aperture? I suppose such an experiment could be done in labs.
Yes! Yes you can! It’s called Frustrated Total internal reflection and you can do it with a laser and a couple of prisms.
Yes you can. That's the near field.