How Does Temporal Coherence Relate to Spectral Width in Absorption Features?

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Thomas Smid
To spin my last post a bit further:

It appears that one could say then that the temporal coherence of a
given frequency spectrum can not be less than the coherence time
associated with the spectral width of any absorption features in the
spectrum.

Thomas
 

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temperature coherence or longitudinal coherence

assume the wave length has a uniform distribution from lamda to lamda+deltalamda

then after N period, N.*lamda=(N+1)*(lamda+deltalamda), N can be found, and N.*lamda is about the longitudinal coherence or temperal coherence.
As I read elsewhere, this concept is essentially a statistical consequence...

Thomas Smid said:
To spin my last post a bit further:

It appears that one could say then that the temporal coherence of a
given frequency spectrum can not be less than the coherence time
associated with the spectral width of any absorption features in the
spectrum.

Thomas