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Frequency methods of geometrical quantities measurements

Project goals

The project is aimed to a transformation of optical lenght changes into a frequency change by means of optical resonator. At the same time, an optical length change can represent directly a geometrical length change or at a stable geometry a change of environment inside the resonator. This optical length change is tranformed into a change of the resonator resonance frequency.

Keywords

stable optical resonatorsnanometer length changes measurementresonance frequency of optical resonators measurementinterferometer nonlinearity measurement

Public support

  • Provider

    Academy of Sciences of the Czech Republic

  • Programme

    Grants of distinctly investigative character focused on the sphere of research pursued at present particularly in the Academy of Sciences of the Czech Republic

  • Call for proposals

    Výzkumné granty 2 (SAV02002-AB)

  • Main participants

    Ústav přístrojové techniky AV ČR, v. v. i.

  • Contest type

    VS - Public tender

  • Contract ID

    —

Alternative language

  • Project name in Czech

    Frekvenční metody měření geometrických veličin

  • Annotation in Czech

    Projekt je zaměřen na transformaci změn optické délky na změnu kmitočtu pomocí optických rezonátorů. Přitom změna optické délky může představovat přímo změnu geometrické délky nebo při stabilní geometrii změnu prostředí uvnitř rezonátoru. Tato změna optické délky se převádí na změnu rezonanční frekvence rezonátoru.

Scientific branches

  • R&D category

    ZV - Basic research

  • CEP classification - main branch

    JA - Electronics and optoelectronics

  • CEP - secondary branch

    JB - Sensors, detecting elements, measurement and regulation

  • CEP - another secondary branch

    —

  • 20201 - Electrical and electronic engineering

Completed project evaluation

  • Provider evaluation

    U - Uspěl podle zadání (s publikovanými či patentovanými výsledky atd.)

  • Project results evaluation

    By the transfomation of optical length changes into the frequency by means of an optical resonator, it was achieved a resolution of 0,05 nm with a stability better than 1 nm during 20 minutes with a linearity of O,O1 nm in a measuring range of 1000 mm.

Solution timeline

  • Realization period - beginning

    Jan 1, 2002

  • Realization period - end

    Jan 1, 2004

  • Project status

    U - Finished project

  • Latest support payment

    —

Data delivery to CEP

  • Confidentiality

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

  • Data delivery code

    CEP/2005/AV0/AV05IA/U/N/5:3

  • Data delivery date

    Sep 26, 2007

Finance

  • Total approved costs

    2,943 thou. CZK

  • Public financial support

    1,341 thou. CZK

  • Other public sources

    1,602 thou. CZK

  • Non public and foreign sources

    0 thou. CZK

Basic information

Recognised costs

2 943 CZK thou.

Public support

1 341 CZK thou.

45%

Provider

Academy of Sciences of the Czech Republic

CEP

JA - Electronics and optoelectronics

Solution period

01. 01. 2002 - 01. 01. 2004

Similar projects(10)

Methods for generation of a length etalon by means of stabilized femtosecond mode-locked laser (GAP102/10/1813) Stable laser optical resonators and their application for measurements of parameters of gas media (GA102/02/1318) Semiconductor laser source with improved coherence and tunability (GA101/98/P270)