Structured laser beam for alignment and large-scale metrology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F22%3A00010917" target="_blank" >RIV/46747885:24220/22:00010917 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24510/22:00010917

Výsledek na webu

<a href="https://www.euspen.eu/knowledge-base/ICE22224.pdf" target="_blank" >https://www.euspen.eu/knowledge-base/ICE22224.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Structured laser beam for alignment and large-scale metrology

Popis výsledku v původním jazyce

The structured laser beam (SLB) is a pseudo-non-diffractive optical beam. Its optical intensity profile in the transverse plane is similar to that of a Bessel beam. Thus, the SLB has a narrow central spot of high intensity surrounded by concentric circles. It is possible to generate a SLB such that the visibility - as defined in optics - of its central spot or concentric circles is equal to one. An interesting feature of the SLB is its ability to propagate over very long distances. It is theoretically possible to generate a SLB with an „infinite” range. The maximum distance at which SLB propagation has been tested is 200 m. Even at a distance of several hundred metres, the SLB retains its low divergence capability. During the measurement, under certain conditions, a divergence angle of less than 0.01 mrad was measured, the diameter of the central spot at the beginning of the beam being about 0.01 mm. This article summarises part of the research related to the properties of the SLB and measurements of some of its characteristics at different distances up to more than 100 m. Extensive simulations have allowed the study of phenomena such as the effect of symmetry breaking on the beam propagation, as well as the minimum dimensions of the free space required around the SLB. The capabilities of the SLB could make it attractive for the potential development of applications in alignment or large-scale metrology.

Název v anglickém jazyce

Structured laser beam for alignment and large-scale metrology

Popis výsledku anglicky

The structured laser beam (SLB) is a pseudo-non-diffractive optical beam. Its optical intensity profile in the transverse plane is similar to that of a Bessel beam. Thus, the SLB has a narrow central spot of high intensity surrounded by concentric circles. It is possible to generate a SLB such that the visibility - as defined in optics - of its central spot or concentric circles is equal to one. An interesting feature of the SLB is its ability to propagate over very long distances. It is theoretically possible to generate a SLB with an „infinite” range. The maximum distance at which SLB propagation has been tested is 200 m. Even at a distance of several hundred metres, the SLB retains its low divergence capability. During the measurement, under certain conditions, a divergence angle of less than 0.01 mrad was measured, the diameter of the central spot at the beginning of the beam being about 0.01 mm. This article summarises part of the research related to the properties of the SLB and measurements of some of its characteristics at different distances up to more than 100 m. Extensive simulations have allowed the study of phenomena such as the effect of symmetry breaking on the beam propagation, as well as the minimum dimensions of the free space required around the SLB. The capabilities of the SLB could make it attractive for the potential development of applications in alignment or large-scale metrology.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022

ISBN

978-199899911-8

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

301 - 304

Název nakladatele

euspen

Místo vydání

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Místo konání akce

Geneva

Datum konání akce

1. 1. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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