- #1
Buzz Bloom
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Assume a source of EM radiation at wave length λ hits a barrier with a small circular hole of diameter d << λ. What fraction of the radiated power (watts) that hits the hole passes through it? Does it depend on the thickness of the barrier?
I understand that after passing through the hole, the radiation diffracts almost uniformly over the entire
2 π rad2 solid angle. For example, if d/λ = 1/30, the power at 90o is 99.3% of the power at 0o.
I have made an effort to find a source for this information on the Internet, but I have not had any success. If someone can cite a useful reference, I would much appreciate it.
I understand that after passing through the hole, the radiation diffracts almost uniformly over the entire
2 π rad2 solid angle. For example, if d/λ = 1/30, the power at 90o is 99.3% of the power at 0o.
I have made an effort to find a source for this information on the Internet, but I have not had any success. If someone can cite a useful reference, I would much appreciate it.