The low-dispersive optical cavity as a length sensor using radiation of an optical frequency comb

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The low-dispersive optical cavity as a length sensor using radiation of an optical frequency comb

Popis výsledku v původním jazyce

New lasers, special digital signal processing electronics, algorithms and new materials for optics enabled development of new absolute distance measurement methods. The phenomenon of the mode-lock of the femtosecond pulse laser increased a number of potential applications with distance surveying where a stable generator of very short and periodically repeated coherent pulses can be used. The aim of the work is a presentation of our unique measuring method which determines the length of unknown distance with direct traceability to a time standard. The principle is based on a passive optical cavity with mirrors keeping distance to be measured. Time spacing of short femtosecond pulses generated by optical frequency comb is optically phase locked to the cavity free spectral range. A value of the repetition frequency of the laser determines the measured distance in that case. The exact value of the frequency/period of the femtosecond pulse train is detected by a frequency counter. The counting gate of the counter is synchronized with a highly stable oscillator disciplined by H-maser. This measuring technique is demonstrated in the work on length characterization of the piezoelectric transducers which belongs to high-resolution positioning actuators

Název v anglickém jazyce

The low-dispersive optical cavity as a length sensor using radiation of an optical frequency comb

Popis výsledku anglicky

New lasers, special digital signal processing electronics, algorithms and new materials for optics enabled development of new absolute distance measurement methods. The phenomenon of the mode-lock of the femtosecond pulse laser increased a number of potential applications with distance surveying where a stable generator of very short and periodically repeated coherent pulses can be used. The aim of the work is a presentation of our unique measuring method which determines the length of unknown distance with direct traceability to a time standard. The principle is based on a passive optical cavity with mirrors keeping distance to be measured. Time spacing of short femtosecond pulses generated by optical frequency comb is optically phase locked to the cavity free spectral range. A value of the repetition frequency of the laser determines the measured distance in that case. The exact value of the frequency/period of the femtosecond pulse train is detected by a frequency counter. The counting gate of the counter is synchronized with a highly stable oscillator disciplined by H-maser. This measuring technique is demonstrated in the work on length characterization of the piezoelectric transducers which belongs to high-resolution positioning actuators

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

EUSPEN 2016. Proceedings of the 16th International Conference of the European Society for Precision Engineering and Nanotechnology

ISBN

978-095667908-6

ISSN

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e-ISSN

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Počet stran výsledku

3

Strana od-do

"P1.73.1"-"P1.73.3"

Název nakladatele

Euspen

Místo vydání

Nottingham

Místo konání akce

Nottingham

Datum konání akce

30. 5. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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