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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Position sensing with suppression of the drift of the refractive index of air for high resolution interferometry
Original language description
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
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
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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Number of pages
4
Pages from-to
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Publisher name
IEEE
Place of publication
Piscataway
Event location
Beijing
Event date
Aug 16, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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