A scale-linearization method for precise laser interferometry.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F00%3A12000005" target="_blank" >RIV/68081731:_____/00:12000005 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A scale-linearization method for precise laser interferometry.

Popis výsledku v původním jazyce

The authors discuss an increase in the precision of a laser interferometer based on the phase division of the fringe using a single-frequency laser for a distance measurement in the subnanometre range. The resolution of the interferometer is extended byusing four paths of the laser beam across the measurement arm of the Michelson interferometer and by subsequent electronic division to the total resolution .lambda./2048. The technique fulfils the expectation that the influence of the fringe distortion caused by a phase difference of .pi./2 between two quadrature signals and the difference of the intensities will be lower. A further improvement of the linearity can be achieved by using a mathematical method which is based on the real-time measurement ofparameters of the detected interferometer fringe and an optimal approximantion of the quadrature signals obtained by using a conical section. The obtained parameters are transformed from the analytical form to the parametric form of the e

Název v anglickém jazyce

A scale-linearization method for precise laser interferometry.

Popis výsledku anglicky

The authors discuss an increase in the precision of a laser interferometer based on the phase division of the fringe using a single-frequency laser for a distance measurement in the subnanometre range. The resolution of the interferometer is extended byusing four paths of the laser beam across the measurement arm of the Michelson interferometer and by subsequent electronic division to the total resolution .lambda./2048. The technique fulfils the expectation that the influence of the fringe distortion caused by a phase difference of .pi./2 between two quadrature signals and the difference of the intensities will be lower. A further improvement of the linearity can be achieved by using a mathematical method which is based on the real-time measurement ofparameters of the detected interferometer fringe and an optimal approximantion of the quadrature signals obtained by using a conical section. The obtained parameters are transformed from the analytical form to the parametric form of the e

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/GV101%2F97%2FK009" target="_blank" >GV101/97/K009: Vědecké centrum nanotechnologií a povrchového inženýrství</a><br>

Návaznosti

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

Rok uplatnění

2000

Kód důvěrnosti údajů

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

Název periodika

Measurement Science and Technology

ISSN

0957-0233

e-ISSN

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Svazek periodika

11

Číslo periodika v rámci svazku

N/A

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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