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7 questions with no upvoted or accepted answers
2 votes
0 answers
36 views

What does it imply when we say that the waves are perfectly correlated?

I am having a hard time understanding difference between correlation and coherence. I got a nice answer for coherence here- Are two waves being in phase is the same as saying that the two waves are ...
Aniruddha Trivedi's user avatar
2 votes
0 answers
114 views

The importance of optical period in coherent radiation

I am reading a text on coherent radiation and not quite understanding a particular statement. To provide some background, the authors state that coherent radiation can arise from light-matter ...
Mathews24's user avatar
  • 649
2 votes
0 answers
210 views

How is the temporal coherence of a pulse defined?

I am having problem with the concept of coherence and photon degeneracy. The temporal coherence of pulse is defined in Born and Wolf as: $$t_c=\lambda^2/c\Delta\lambda$$ (The time a photon takes to ...
Anonymous's user avatar
  • 1,047
1 vote
0 answers
65 views

Coherence, Correlation and causality in Quantum Field Theory

I've started to study in details quantum optics and I find difficulties in linking the concepts of coherence and correlation among fields, especially because I'm building right now a background on ...
Luca Bianchi's user avatar
1 vote
0 answers
187 views

First-order coherence of thermal light

so I have the following question: I want to calculate the first order coherence function for the light coming from a thermal source. I should note that this is a question I have and not a HW problem. ...
crazyaxion's user avatar
1 vote
0 answers
216 views

Wiener-Khinchin theorem for multimode coherent light

The Wiener-Khinchin theorem says that the Fourier transform of the degree of first order coherence is equal to the power spectral density normalized (Loudon, Quantum theory of light, pag. 102): $F(\...
Mark_Bell's user avatar
  • 896
0 votes
0 answers
30 views

Modelling incoherent sources

Suppose some (coherent) light propagates onto a one-dimensional barrier with two open slits, each of length $\delta$ and separated by a distance $s$ (we can assume the centroid is known and placed at $...
Balter 90s's user avatar