About: Interferometry with direct compensation of fluctuations of refractive index of air

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We present an experimental arrangement of an interferometric system designed to operate with full compensation for varying refractive index of air in the measuring axis. The concept is based on a principle where the wavelength of the laser source is derived not from an optical frequency of the stabilized laser but from a fixed length being a base-plate or a frame of the whole measuring setup. This results into stabilization of the wavelength of the laser source in atmospheric conditions to mechanical length of suitable etalon made of a material with very low thermal expansion. The ultra-low thermal expanding glass ceramic materials available on the market perform thermal expansion coefficients on the level 10-8 which significantly exceeds the limits of uncertainty posed by indirect evaluation of refractive index of air through Edlen formula. To verify the concept a tracking of laser frequency following the drift of refractive index has been performed. We present an experimental arrangement of an interferometric system designed to operate with full compensation for varying refractive index of air in the measuring axis. The concept is based on a principle where the wavelength of the laser source is derived not from an optical frequency of the stabilized laser but from a fixed length being a base-plate or a frame of the whole measuring setup. This results into stabilization of the wavelength of the laser source in atmospheric conditions to mechanical length of suitable etalon made of a material with very low thermal expansion. The ultra-low thermal expanding glass ceramic materials available on the market perform thermal expansion coefficients on the level 10-8 which significantly exceeds the limits of uncertainty posed by indirect evaluation of refractive index of air through Edlen formula. To verify the concept a tracking of laser frequency following the drift of refractive index has been performed. (en)
Title	Interferometry with direct compensation of fluctuations of refractive index of air Interferometry with direct compensation of fluctuations of refractive index of air (en)
skos:prefLabel	Interferometry with direct compensation of fluctuations of refractive index of air Interferometry with direct compensation of fluctuations of refractive index of air (en)
skos:notation	RIV/68081731:_____/10:00352206!RIV11-GA0-68081731
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FR-TI1/241), P(GA102/09/1276), P(KAN311610701), P(LC06007), Z(AV0Z20650511)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Buchta, Zdeněk Čížek, Martin Hrabina, Jan Číp, Ondřej Lazar, Josef
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav přístrojové techniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	264491
http://linked.open...ai/riv/idVysledku	RIV/68081731:_____/10:00352206
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	refractometry; nanopositioning; interferometry; nanometrology (en)
http://linked.open.../riv/klicoveSlovo	interferometry nanometrology nanopositioning refractometry
http://linked.open...ontrolniKodProRIV	[24396B0FEF87]
http://linked.open...v/mistoKonaniAkce	Liptovsky Jan
http://linked.open...i/riv/mistoVydani	Bellingham
http://linked.open...i/riv/nazevZdroje	17th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (Proceedings of SPIE Vol. 7746)
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Components for nano-diagnostic of length fluctuations, deviation of shapes and surface faults Nanometrology using methods of scanning probe microscopy Centre of Modern Optics Interferometer with full in-line compensation of the fluctuations of refractive index
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Buchta, Zdeněk Hrabina, Jan Lazar, Josef Číp, Ondřej Čížek, Martin
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2010-09-06 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Research into experimental methods for examination of the physical properties of matter and their application in advanced technologies
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	SPIE
https://schema.org/isbn	978-0-8194-8236-5
is http://linked.open...avai/riv/vysledek of	Interferometry with direct compensation of fluctuations of refractive index of air

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