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Dispersion (optics)

Dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency. Sometimes the term chromatic dispersion is used to refer to optics specifically, as opposed to wave propagation in general. A medium having this common property may be termed a dispersive medium.

Material dispersion in optics, Spatial dispersion & Dispersion control

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Examples

Material and waveguide dispersion

Material dispersion in optics

Group-velocity dispersion

Dispersion control

In waveguides

Higher-order dispersion over broad bandwidths

Spatial dispersion

In gemology

In imaging

Pulsar emissions

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Dispersion (optics)

Nodes118
Edges117
Triples13
Avg. degree1.98
Density0.016949
Components1

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Important terminology

dispersion light frequency velocity pulse pulses group optical optics material index chromatic wave wavelength phase group-velocity also medium different used

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
acoustic dispersion in the case of soundinstance ofdispersion in the same sense can apply to any sort of wave motion0.80text
seismic wavesinstance ofdispersion in the same sense can apply to any sort of wave motion0.80text
and in gravity wavesinstance ofdispersion in the same sense can apply to any sort of wave motion0.80text
telecommunicationsinstance ofIn some applications0.80text
the absolute phase of a wave is often not important but only the propagation of wave packets orinstance ofIn some applications0.80text
the Cauchy or Sellmeier equations.Because of the Kramersinstance ofThe wavelength dependence of a material's refractive index is usually quantified by its Abbe number or its coefficients in an empirical formula0.80text
self-phase modulationinstance ofsuch compensation is ultimately limited by nonlinear effects0.80text
which interact with dispersion to make it very difficult to undo.Dispersion control is also important in lasers that produce short pulsesinstance ofsuch compensation is ultimately limited by nonlinear effects0.80text
pulse spreading.In particularinstance ofand more complex calculations are required to compute effects0.80text
the dispersion parameter D defined above is obtained from only one derivative of the group velocityinstance ofand more complex calculations are required to compute effects0.80text
metalsinstance ofparticularly in conducting media0.80text
electrolytesinstance ofparticularly in conducting media0.80text

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