| dbo:abstract |
Ein Axicon ist eine spezielle, konisch geschliffene Linse. Ein Axicon bildet eine Punktquelle auf eine Linie entlang der optischen Achse ab, oder transformiert einen Laserstrahl in einen Ring. (de) An axicon is a specialized type of lens which has a conical surface. An axicon transforms a laser beam into a ring shaped distribution. They can be convex or concave and be made of any optical material. The combination with other axicons or lenses allows a wide variety of beam patterns to be generated. It can be used to turn a Gaussian beam into a non-diffractive Bessel-like beam. Axicons were first proposed in 1954 by John McLeod. Axicons are used in atomic traps and for generating plasma in wakefield accelerators. They are used in eye surgery in cases where a ring-shaped spot is useful. The Axicon is usually characterized by the ratio of the diameter of the ring to the distance from the lens tip to image plane d/l. (en) Les axicons sont une famille de systèmes optiques à symétrie cylindrique qui produisent une ligne de focalisation plutôt qu'un seul point de focalisation. L'axicon le plus connu est la lentille conique. (fr) Un axicon è un tipo specializzato di lente ottica che ha una superficie conica.Un axicon trasforma un impulso laser in una distribuzione a forma d'anello.Possono essere concavi o convessi ed essere costituiti di qualsiasi materiale ottico.La combinazione con altri axicon o lenti permette di generare un'ampia varietà di pattern d'impulso.Può essere usato per convertire un fascio gaussiano in un simil- non diffrattivo. Gli axicon furono proposti per la prima volta nel 1954 da John McLeod. Gli Axicon sono usati nelle per generare plasma negli acceleratori al plasma.Sono usati nella chirurgia laser dell'occhio nei casi in cui sia utile un laser con forma ad anello. (it) Аксиконус — специализированный тип линзы, у которой одна из сторон имеет коническую форму. Аксиконус — отправная точка для линии, идущей вдоль оптической оси, или для преобразования луча лазера в кольцо. Он может быть использован для преобразования луча Гаусса в приближение к лучу Бесселя с хорошим сокращением дифракции. (ru) |
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| rdfs:comment |
Ein Axicon ist eine spezielle, konisch geschliffene Linse. Ein Axicon bildet eine Punktquelle auf eine Linie entlang der optischen Achse ab, oder transformiert einen Laserstrahl in einen Ring. (de) Les axicons sont une famille de systèmes optiques à symétrie cylindrique qui produisent une ligne de focalisation plutôt qu'un seul point de focalisation. L'axicon le plus connu est la lentille conique. (fr) Аксиконус — специализированный тип линзы, у которой одна из сторон имеет коническую форму. Аксиконус — отправная точка для линии, идущей вдоль оптической оси, или для преобразования луча лазера в кольцо. Он может быть использован для преобразования луча Гаусса в приближение к лучу Бесселя с хорошим сокращением дифракции. (ru) An axicon is a specialized type of lens which has a conical surface. An axicon transforms a laser beam into a ring shaped distribution. They can be convex or concave and be made of any optical material. The combination with other axicons or lenses allows a wide variety of beam patterns to be generated. It can be used to turn a Gaussian beam into a non-diffractive Bessel-like beam. Axicons were first proposed in 1954 by John McLeod. Axicons are used in atomic traps and for generating plasma in wakefield accelerators. They are used in eye surgery in cases where a ring-shaped spot is useful. (en) Un axicon è un tipo specializzato di lente ottica che ha una superficie conica.Un axicon trasforma un impulso laser in una distribuzione a forma d'anello.Possono essere concavi o convessi ed essere costituiti di qualsiasi materiale ottico.La combinazione con altri axicon o lenti permette di generare un'ampia varietà di pattern d'impulso.Può essere usato per convertire un fascio gaussiano in un simil- non diffrattivo. Gli axicon furono proposti per la prima volta nel 1954 da John McLeod. (it) |
| rdfs:label |
Axicon (de) Axicon (en) Axicon (fr) Axicon (it) Аксиконус (ru) |
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