File:WhiteLightInterferometry.gif
Summary
| Description |
English: White light interferometry: if you overlap a low-coherence signal with itself, the resulting intensity will be constant (no interference) unless the delay between the two is smaller than the coherence time, when interference fringes in the intensity appear. |
| Date | |
| Source | https://twitter.com/j_bertolotti/status/1144165624651931648 |
| Author | Jacopo Bertolotti |
| Permission (Reusing this file) |
https://twitter.com/j_bertolotti/status/1030470604418428929 |
Mathematica 11.0 code
signal = Fourier[
Table[Sqrt[E^(-((\[Omega] - 2)^2/(2 0.01^2)))] E^(I RandomReal[{0, 2 \[Pi]}]), {\[Omega], -10, 10, 0.002}]];
p1 = Table[
GraphicsRow[{
ListPlot[{Re@signal, Re@RotateRight[signal, j]}, PlotRange -> All, Joined -> True, Axes -> False]
,
Plot[E^(-((\[Omega] - 103)^2/(2 5^2)))*Cos[\[Omega] - 103], {\[Omega], 0, 200}, PlotRange -> All, PlotStyle -> {Black}, FrameTicks -> None, Axes -> False, Frame -> True, FrameLabel -> {"\[CapitalDelta]\[Tau]", "\[Integral]|E\!\(\*SuperscriptBox[\(|\), \(2\)]\)dt"}, LabelStyle -> {Black, Bold}, Epilog -> {Red, PointSize[0.03], Point[{j + 103, E^(-((j)^2/(2 5^2))) Cos[j]}]}]}, ImageSize -> Large]
, {j, -200, 200, 1}];
ListAnimate[p1]
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
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