Plot of a <a href="https://en.wikipedia.org/wiki/Ramsey_interferometry" class="extiw" title="en:Ramsey interferometry">Ramsey-fringe pattern</a> (as used in <a href="https://en.wikipedia.org/wiki/Atomic_clock" class="extiw" title="en:Atomic clock">atomic clocks</a>) of an ideal monochromatic atom beam with a free evolution time <i>T</i> vs. pulse duration <i>τ</i> ratio of <i>T</i>/<i>τ</i>=8. The relative detuning (<i>ω</i>−<i>ω</i><sub>0</sub>)/<i>Ω</i><sub>0</sub> is plotted in the interval [-5, 5]. More on the underlying theory can be found in <sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[1]</a></sup>.
<a href="//commons.wikimedia.org/wiki/User:Geek3" title="User:Geek3">Geek3</a>
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