All Questions
8
questions
2
votes
1
answer
110
views
Photon though a single-slit and uncertainty in the $z$- (longitudinal) direction
Heisenberg's uncertainty principle is sometimes invoked in explaining the width of the diffraction pattern as light passes a single slit. In the case of single photons, when a photon is directed ...
- 8,650
2
votes
1
answer
240
views
Single slit diffraction from Feynman's rotating amplitudes ("Little Arrows")
In Feynman's NZ lectures (and consequent book) “QED – The Strange Theory of Light and Matter”, he gives a model for optics.
He describes a probability amplitude for a photon to be detected after being ...
- 2,141
11
votes
6
answers
2k
views
What is the length of a photon?
Some questions that look kind of similar have been asked before, and I find the answers quite confusing. I intend to ask this question in a way that clearly shows what I'm asking.
Imagine the ...
- 3,008
0
votes
2
answers
69
views
A quantum mechanical interpretation of the diffraction formula, $d \sin \theta = n \lambda$
In the single slit diffraction pattern there exists the following formula:
$$d \sin \theta = n \lambda$$
I was looking at and thinking about the quantisation condition of energy, $E = nh\nu$, and saw ...
- 485
3
votes
1
answer
742
views
What is the principal cause of diffraction?
I have found another question similar to mine here. But I want to know why does diffraction of light happen in the first place. I have found other resources on google which explain the topic partially ...
- 1,536
5
votes
1
answer
101
views
Diffractionless optical systems
Conventional optical systems are (at best) diffraction limited. But as I understand it, that is solely due to the instrument altering the properties of the incoming radiation -- e.g., an Airy disc ...
- 4,332
0
votes
1
answer
214
views
Time duration for pulse of single electron viewed as a wave
Electron as an example has a de Broglie wavelength and could diffract.
If it has a single wavelength the time extent of the particle's pulse duration would be infinite ..
If it carries a broadband ...
- 1,047
2
votes
1
answer
773
views
Diffraction Gratings
Is it possible to use the sawtooth shape diffraction grating instead of rectangular grating
if yes then which parameters will affect at the output ? Secondly, what is special in blaze grating ...
- 611