Fresnel diffraction theory

E23939

optics theory physical theory wave optics framework

Fresnel diffraction theory is a wave-optics framework that describes how light diffracts when source or observation distances are finite, using near-field approximations derived from the Huygens–Fresnel principle.

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All labels observed (8)

Label	Occurrences
Fresnel diffraction	8
Fresnel	1
Fresnel diffraction formula	1
Fresnel diffraction integral	1
Fresnel diffraction theory canonical	1
Fresnel transform	1
Fresnel wave theory	1
Fresnel–Poisson diffraction experiment	1

How this entity was disambiguated

This entity first appeared as the object of triple T185492 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Fresnel diffraction theory
Context triple: [Huygens–Fresnel principle, relatedTo, Fresnel diffraction theory]

A. Fraunhofer diffraction
Fraunhofer diffraction is the far-field diffraction pattern of waves, typically light, observed when both the source and observation screen are effectively at infinite distance or made so with lenses, producing characteristic interference patterns.
B. Huygens–Fresnel principle
The Huygens–Fresnel principle is a fundamental concept in wave optics that explains how every point on a wavefront acts as a source of secondary wavelets whose interference determines the wave’s subsequent propagation and diffraction.
C. Newtonian optics
Newtonian optics is the branch of physics developed by Isaac Newton that explains light primarily as a stream of particles to account for reflection, refraction, and color phenomena.
D. Poisson spot
Poisson spot is a bright point of light that appears at the center of the shadow of a circular object due to wave diffraction, providing striking evidence for the wave nature of light.
E. Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Fresnel diffraction theory
Target entity description: Fresnel diffraction theory is a wave-optics framework that describes how light diffracts when source or observation distances are finite, using near-field approximations derived from the Huygens–Fresnel principle.

A. Fraunhofer diffraction
Fraunhofer diffraction is the far-field diffraction pattern of waves, typically light, observed when both the source and observation screen are effectively at infinite distance or made so with lenses, producing characteristic interference patterns.
B. Huygens–Fresnel principle
The Huygens–Fresnel principle is a fundamental concept in wave optics that explains how every point on a wavefront acts as a source of secondary wavelets whose interference determines the wave’s subsequent propagation and diffraction.
C. Newtonian optics
Newtonian optics is the branch of physics developed by Isaac Newton that explains light primarily as a stream of particles to account for reflection, refraction, and color phenomena.
D. Poisson spot
Poisson spot is a bright point of light that appears at the center of the shadow of a circular object due to wave diffraction, providing striking evidence for the wave nature of light.
E. Hanbury Brown and Twiss effect
The Hanbury Brown and Twiss effect is a quantum optical phenomenon in which correlations in the arrival times of identical particles, such as photons, reveal their underlying statistical and coherence properties.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	optics theory ⓘ physical theory ⓘ wave optics framework ⓘ
appliesTo	intermediate-field diffraction regime ⓘ near-field diffraction regime ⓘ
approaches	Fraunhofer diffraction in far-field limit ⓘ
assumes	monochromatic illumination in basic form ⓘ scalar wave approximation ⓘ
basedOn	Huygens–Fresnel principle ⓘ
category	diffraction theory ⓘ
concerns	interference of secondary wavelets ⓘ
contrastedWith	Fraunhofer diffraction theory ⓘ linked to: Fraunhofer diffraction
describes	diffraction with finite observation distance ⓘ diffraction with finite source distance ⓘ near-field diffraction of light ⓘ
developedFrom	Huygens principle ⓘ linked to: Huygens–Fresnel principle
explains	Fresnel zones ⓘ diffraction by edges and obstacles in near field ⓘ diffraction patterns of apertures at finite distances ⓘ zone plate focusing ⓘ
field	optics ⓘ physics ⓘ
generalizationOf	geometrical optics shadow boundary description ⓘ
historicalPeriod	19th century ⓘ
implementedBy	Fresnel transform ⓘ linked to: Fresnel diffraction theory
mathematicallyFormulatedAs	Fresnel diffraction integral ⓘ linked to: Fresnel diffraction theory
models	complex amplitude distribution in observation plane ⓘ
namedAfter	Augustin-Jean Fresnel ⓘ
notApplicableTo	far-field limit where Fraunhofer diffraction applies ⓘ
relatedConcept	Rayleigh–Sommerfeld diffraction theory ⓘ linked to: Kirchhoff diffraction theory angular spectrum method ⓘ
relatedTo	Fresnel zone construction ⓘ linked to: Fresnel zones Kirchhoff diffraction theory ⓘ
requires	finite propagation distance between aperture and observation plane ⓘ
subfieldOf	physical optics ⓘ wave optics ⓘ
usedIn	X-ray optics ⓘ coherent diffraction imaging ⓘ design of diffractive optical elements ⓘ electron microscopy ⓘ holography ⓘ optical imaging analysis ⓘ propagation-based phase-contrast imaging ⓘ
uses	Fresnel integrals ⓘ complex exponential phase factors ⓘ
usesApproximation	paraxial approximation ⓘ quadratic phase approximation ⓘ

How these facts were elicited