In long-distance transmission systems, the coherence length may be reduced by propagation factors such as dispersion, scattering, and diffraction. ==Lasers== Multimode helium–neon lasers have a typical coherence length of 20 cm, while the coherence length of singlemode ones can exceed 100 m. Semiconductor lasers reach some 100 m. Singlemode fibe...
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http://en.wikipedia.org/wiki/Coherence_length
(from the article `electromagnetic radiation`) Except for radio waves transmitted by antennas that are switched on for many hours, most electromagnetic waves comes in many small pieces. The length ... ...range of wavelengths, the more coherent the beam—meaning the more precisely every light wave in the beam is in exact synchronizat...
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http://www.britannica.com/eb/a-z/c/106
how long it is before waves from a light source get out of step. The less wide the spread of radiation leaving the source, the longer the coherence length.
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http://www.chemistry-dictionary.com/definition/coherence+length.php
the propagation distance over which propagating optical radiation may be considered to be coherent radiation NOTE - If the spectral linewidth of the source is ?? and the central wavelength is ?
0, the coherence length in a medium of refractive index n is approximately ?
02/n.?....
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-01-17
length describing the spatial variation of the superconducting order parameter in the Ginzburg-Landau theory NOTE 1 - ? is a function of temperature and nearly equal to the BCS coherence length, ?0, at 0 K in a clean superconductor. NOTE 2 - ? = (F0/2p µ0 Hc2
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=815-01-32
The maximum length at which a light source has not exceeded its loss budget. The longer a coherence length, the further the distance from a light source to its fringe visibility. The coherence length of light can be tested with a Michelson interferometer
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http://www.used-line.com/glossaries/glossary.cfm?g_id=17
No exact match found.
