Position sensing with suppression of the drift of the refractive index of air for high resolution interferometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F14%3A00434225" target="_blank" >RIV/68081731:_____/14:00434225 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929044" target="_blank" >http://dx.doi.org/10.1109/URSIGASS.2014.6929044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/URSIGASS.2014.6929044" target="_blank" >10.1109/URSIGASS.2014.6929044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Position sensing with suppression of the drift of the refractive index of air for high resolution interferometry

Popis výsledku v původním jazyce

We present an interferometric technique based on differential interferometry setup for measurement in the subnanometer scale in atmospheric conditions. One of the important limiting factors in any optical measurement are fluctuations of the refractive index of air representing a source of uncertainty traditionally compensated when the index is evaluated indirectly from the physical parameters of the atmosphere. Our proposal is based on the concept of overdetermined interferometric setup where a reference length is derived from a mechanical frame made from a material with very low thermal coefficient on the 1xE-8 level. The technique allows to track the variations of the refractive index of air on-line directly in the line of the measuring beam and to compensate for the fluctuations. The optical setup consists of three interferometers sharing the same beam path where two measure differentially the displacement while the third evaluates the changes in the measuring range acting as a trac

Název v anglickém jazyce

Position sensing with suppression of the drift of the refractive index of air for high resolution interferometry

Popis výsledku anglicky

We present an interferometric technique based on differential interferometry setup for measurement in the subnanometer scale in atmospheric conditions. One of the important limiting factors in any optical measurement are fluctuations of the refractive index of air representing a source of uncertainty traditionally compensated when the index is evaluated indirectly from the physical parameters of the atmosphere. Our proposal is based on the concept of overdetermined interferometric setup where a reference length is derived from a mechanical frame made from a material with very low thermal coefficient on the 1xE-8 level. The technique allows to track the variations of the refractive index of air on-line directly in the line of the measuring beam and to compensate for the fluctuations. The optical setup consists of three interferometers sharing the same beam path where two measure differentially the displacement while the third evaluates the changes in the measuring range acting as a trac

Druh

D - Stať ve sborníku

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI (Proceedings IEEE)

ISBN

978-1-4673-5225-3

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

IEEE

Místo vydání

Piscataway

Místo konání akce

Beijing

Datum konání akce

16. 8. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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