About: High quality quasi-Bessel beam generated by round-tip axicon

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	V článku bylo studováno prostorové rozložení intenzity Besselovského svazku nultého řádu vytvořeného pomocí axiconu s oblým vrcholem. Toto zaoblení vede k oscilacím v intenzitě pole a tudíž i k narušení unikátních vlastností tohoto tipu svazku. Ukázali jsme, jak tyto oscilace odstranit pomocí prostorové filtrace ve Fourierově rovině. Pro simulaci šíření pole za axiconem s oblým vrcholem jsem požili numerickou metodu založenou na Hankelově transformaci. Porovnali jsme experimentálně naměřenou intenzitu pole se simulovanými daty. Shoda byly velice dobrá. (cs) We study theoretically and experimentally the spatial intensity distribution of the zero-order Bessel beam formed by the axicon which possess a rounded tip. Such a tip generates a refracted beam that interferes with the quasi-Bessel beam created behind the axicon. In turn an undesired intensity modulation occurs that significantly disturbs the unique properties of the quasi-Bessel beam We show how the spatial filtration of the beam in the Fourier plane improves this spatial beam distribution and removes the undesired modulation.We use an efficient numerical method based on Hankel transformations to simulate the propagation of the beam behind the axicon and filter. We experimentally measure the intensity distribution of the beam in many lateral planes and subsequently reconstruct the spatial intensity distribution of the beam. Computed and measured beam distributions are compared and the obtained agreement is very good. We study theoretically and experimentally the spatial intensity distribution of the zero-order Bessel beam formed by the axicon which possess a rounded tip. Such a tip generates a refracted beam that interferes with the quasi-Bessel beam created behind the axicon. In turn an undesired intensity modulation occurs that significantly disturbs the unique properties of the quasi-Bessel beam We show how the spatial filtration of the beam in the Fourier plane improves this spatial beam distribution and removes the undesired modulation.We use an efficient numerical method based on Hankel transformations to simulate the propagation of the beam behind the axicon and filter. We experimentally measure the intensity distribution of the beam in many lateral planes and subsequently reconstruct the spatial intensity distribution of the beam. Computed and measured beam distributions are compared and the obtained agreement is very good. (en)
Title	High quality quasi-Bessel beam generated by round-tip axicon High quality quasi-Bessel beam generated by round-tip axicon (en) Generování vysoce kvalitního Besselovského svazku pomocí axiconu s oblým vrcholem (cs)
skos:prefLabel	High quality quasi-Bessel beam generated by round-tip axicon High quality quasi-Bessel beam generated by round-tip axicon (en) Generování vysoce kvalitního Besselovského svazku pomocí axiconu s oblým vrcholem (cs)
skos:notation	RIV/68081731:_____/08:00314456!RIV09-AV0-68081731
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FT-TA2/059), P(LC06007), Z(AV0Z20650511)
http://linked.open...iv/cisloPeriodika	17
http://linked.open...vai/riv/dodaniDat	2009
http://linked.open...aciTvurceVysledku	Čižmár, Tomáš Brzobohatý, Oto Zemánek, Pavel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	370063
http://linked.open...ai/riv/idVysledku	RIV/68081731:_____/08:00314456
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fourier optics and signal processing; spatial filtering; laser beam shaping (en)
http://linked.open.../riv/klicoveSlovo	laser beam shaping spatial filtering fourier optics and signal processing
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[39DD4E558F31]
http://linked.open...i/riv/nazevZdroje	Optics Express
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Modern Optics Systems for generation of nondiffracting beams and transfer of mechanical effects of light.
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	16
http://linked.open...iv/tvurceVysledku	Brzobohatý, Oto Zemánek, Pavel Čižmár, Tomáš
http://linked.open...ain/vavai/riv/wos	000259268700029
http://linked.open...n/vavai/riv/zamer	Research into experimental methods for examination of the physical properties of matter and their application in advanced technologies
issn	1094-4087
number of pages	13 (xsd:int)

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