Talbot effect
E656399
The Talbot effect is a near-field optical phenomenon in which a periodic structure illuminated by coherent light produces self-images at regular intervals along the propagation direction.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
near-field diffraction effect
ⓘ
optical phenomenon ⓘ self-imaging effect ⓘ |
| alsoKnownAs | Talbot self-imaging effect NERFINISHED ⓘ |
| appliesTo |
gratings
ⓘ
periodic amplitude structures ⓘ periodic phase structures ⓘ |
| basedOn |
Fresnel diffraction
NERFINISHED
ⓘ
wave interference ⓘ |
| characterizedBy |
Talbot distance
NERFINISHED
ⓘ
repetition of images at regular longitudinal intervals ⓘ |
| dependsOn |
period of the structure
ⓘ
propagation distance ⓘ wavelength of light ⓘ |
| describes | self-imaging of periodic structures under coherent illumination ⓘ |
| discoveredBy | Henry Fox Talbot NERFINISHED ⓘ |
| discoveredIn | 1836 ⓘ |
| domain | classical optics ⓘ |
| exhibits | fractional Talbot images at rational fractions of the Talbot distance ⓘ |
| field |
optics
ⓘ
physical optics ⓘ wave optics ⓘ |
| generalizedTo |
atomic beams
ⓘ
electron waves ⓘ matter waves ⓘ |
| hasQuantity | Talbot length NERFINISHED ⓘ |
| hasVariant |
Talbot-Lau effect
NERFINISHED
ⓘ
fractional Talbot effect NERFINISHED ⓘ quantum Talbot effect NERFINISHED ⓘ temporal Talbot effect NERFINISHED ⓘ |
| isTypeOf |
diffraction phenomenon
ⓘ
self-imaging phenomenon ⓘ |
| namedAfter | Henry Fox Talbot NERFINISHED ⓘ |
| occursIn | near field ⓘ |
| occursWhen | a periodic structure is illuminated by coherent light ⓘ |
| produces |
repeated intensity patterns along the propagation direction
ⓘ
self-images of the periodic structure ⓘ |
| requires |
coherent illumination
ⓘ
periodic structure ⓘ |
| TalbotLengthFormula | z_T = 2 a^2 / λ for a 1D grating in paraxial approximation ⓘ |
| usedIn |
beam shaping
ⓘ
matter-wave interferometry ⓘ optical imaging ⓘ optical information processing ⓘ optical lithography ⓘ optical metrology ⓘ x-ray optics ⓘ |
Referenced by (1)
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