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Programmable axicon for variable inclination of the focal segment
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2004 (English)In: Journal of Modern Optics, ISSN 0950-0340, E-ISSN 1362-3044, Vol. 51, no 14, 2185-2190 p.Article in journal (Refereed) Published
Abstract [en]

An axicon creates a long and narrow focal segment along its optical axis and therefore it is widely recognized as a cornerstone element in metrology and alignment techniques. In oblique incidence the shape of the axicon can be designed such that its sharp focal line is retained. However, when an elliptical or circular axicon is illuminated at an angle different from the nominal angle, the focal segment suffers from astigmatism and broadens significantly. The use of a spatial light modulator is proposed for real-time compensation of the ensuing aberration. The result is a diffractive axicon with its degree of ellipticity adjusted to the inclination angle of the incident light, thus producing a diffraction-limited Bessel beam for a wide range of illumination angles.

Place, publisher, year, edition, pages
2004. Vol. 51, no 14, 2185-2190 p.
Keyword [en]
spatial light-modulator, nondiffracting beams, oblique illumination, aberration, triangulation, compensation, generation, holograms, depth, range
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-23818DOI: 10.1080/0950034042000265550ISI: 000224552000013Scopus ID: 2-s2.0-5144233412OAI: oai:DiVA.org:kth-23818DiVA: diva2:342517
Note
QC 20100525 QC 20110916Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Burvall, Anna

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