Fresnel zone plates
E39351
Fresnel zone plates are diffractive optical elements composed of concentric rings that focus light through interference rather than refraction, serving as lens alternatives in applications like X-ray and microscopy.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| Fresnel zone plate | 0 |
| Fresnel lens | 1 |
Statements (58)
| Predicate | Object |
|---|---|
| instanceOf |
diffractive optical element
ⓘ
focusing element ⓘ optical component ⓘ |
| basedOn |
diffraction
ⓘ
interference ⓘ |
| characterizedBy |
diffraction efficiency
ⓘ
focal length ⓘ outermost zone width ⓘ |
| differsFrom | refractive lens ⓘ |
| fabricatedBy |
X-ray lithography
ⓘ
electron-beam lithography ⓘ nanoimprint lithography ⓘ |
| fabricatedFrom |
gold
ⓘ
nickel ⓘ tungsten ⓘ |
| fabricatedOn |
silicon nitride membrane
ⓘ
silicon substrate ⓘ |
| focusesBy | constructive interference ⓘ |
| governedBy |
Fresnel diffraction theory
ⓘ
surface form:
Fresnel diffraction
|
| hasAdvantage |
no bulk material needed for focusing
ⓘ
suitable for high-energy photons where lenses are impractical ⓘ |
| hasLimitation |
limited efficiency in first order
ⓘ
strong wavelength dependence ⓘ |
| hasProperty |
acts as a lens alternative
ⓘ
can achieve very small focal spots ⓘ chromatic ⓘ focuses light ⓘ high numerical aperture possible ⓘ lightweight ⓘ multiple diffraction orders ⓘ thin element ⓘ |
| hasStructure |
alternating transparent and opaque zones
ⓘ
concentric rings ⓘ radially varying period ⓘ |
| hasType |
amplitude zone plate
ⓘ
binary zone plate ⓘ kinoform zone plate ⓘ multilevel zone plate ⓘ phase zone plate ⓘ spiral zone plate ⓘ stacked zone plate ⓘ |
| namedAfter | Augustin-Jean Fresnel ⓘ |
| operatesIn |
X-ray regime
ⓘ
extreme ultraviolet ⓘ infrared ⓘ visible light ⓘ |
| usedFor |
EUV lithography
ⓘ
X-ray microscopy ⓘ beam focusing ⓘ beam shaping ⓘ micro- and nano-imaging ⓘ soft X-ray imaging ⓘ spectroscopy ⓘ zone-plate telescopes ⓘ |
| usedIn |
free-electron laser beamlines
ⓘ
laboratory X-ray microscopes ⓘ synchrotron radiation facilities ⓘ |
| usesPrinciple | Huygens–Fresnel principle ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fresnel lens