This twists my brain.
Even if I imagine light as a probability wave or think about tunneling, this is more weird.
Changing the photon direction using an opaque material and modifying the general direction of photons by blocking specific locations thus enhancing light transmission is well known, am I missing something?
Why do you think a magnifying glass is shaped in such a way and we put lots of tiny scratches into glass (aka shine it)?
It just seems to match predictions of QED.
I can see how very fine scratches make light penetrate better, as when you polish a glass telescope lens. But that doesn't translate to this case in my mind.
Please explain how blocking all of the paths enhances transmission of light. How do you get from "blocking specific locations" to every single hole is plugged up makes the laser light penetrate 70% better?
Oh, sorry I didn't see your reply. I don't check the boards too often anymore.
The keyword here is blocking with an "opaque" material, this changes the amount of spin the photons will incur while in this material so that they point through the holes by the time they reach the material edges rather than in another direction.
I could be missing something but it seems like a very small instance of diffraction grating. If you really want learn a little about this topic then read this. It's ~150 pages and quite accessible.
The article from Optics Express mentioned: Extraordinary light transmission through opaque thin metal film wit...
(Note: the full article is available in pdf format)