Structured laser beam for alignment and large-scale metrology

Result code in 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>

Alternative codes found

RIV/46747885:24510/22:00010917

Result on the web

<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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Result language

angličtina

Original language name

Structured laser beam for alignment and large-scale metrology

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Article name in the collection

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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Number of pages

4

Pages from-to

301 - 304

Publisher name

euspen

Place of publication

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Event location

Geneva

Event date

Jan 1, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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