Delivery of 1.9 mu m - laser radiation using air-core Bragg fibers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00309134" target="_blank" >RIV/68407700:21340/16:00309134 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2263314" target="_blank" >http://dx.doi.org/10.1117/12.2263314</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2263314" target="_blank" >10.1117/12.2263314</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Delivery of 1.9 mu m - laser radiation using air-core Bragg fibers

Popis výsledku v původním jazyce

In this paper we have investigated Bragg fibers for the 1.94 mu m laser-radiation delivery generated by a thulium fiber laser with a maximal continuous output power 50W. For such investigation laboratory-designed and fabricated hollow-core Bragg fibers have been employed with different diameters of 5, 40, 56 and 73 mu m surrounded by three pairs of circular Bragg layers. Fundamental optical characteristics such as overall transmittance, attenuation coefficient, bending losses, and delivered spatial beam profiles at the wavelength of 1.94 mu m for all tested fibers are reported and summarized in this contribution. In the case of laser radiation delivery with the intensity of 65 kW/cm(2), the lowest attenuation coefficient of 1.278 dB/m was determined for the Bragg fiber with the inner air-core diameter of 56 mu m. Moreover, the bending losses for a small bend diameter of 15 mm reached 0.177 dB only. However delivered laser radiation was highly multimode character.

Název v anglickém jazyce

Delivery of 1.9 mu m - laser radiation using air-core Bragg fibers

Popis výsledku anglicky

In this paper we have investigated Bragg fibers for the 1.94 mu m laser-radiation delivery generated by a thulium fiber laser with a maximal continuous output power 50W. For such investigation laboratory-designed and fabricated hollow-core Bragg fibers have been employed with different diameters of 5, 40, 56 and 73 mu m surrounded by three pairs of circular Bragg layers. Fundamental optical characteristics such as overall transmittance, attenuation coefficient, bending losses, and delivered spatial beam profiles at the wavelength of 1.94 mu m for all tested fibers are reported and summarized in this contribution. In the case of laser radiation delivery with the intensity of 65 kW/cm(2), the lowest attenuation coefficient of 1.278 dB/m was determined for the Bragg fiber with the inner air-core diameter of 56 mu m. Moreover, the bending losses for a small bend diameter of 15 mm reached 0.177 dB only. However delivered laser radiation was highly multimode character.

Druh

D - Stať ve sborníku

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/GA16-10019S" target="_blank" >GA16-10019S: Braggovská vlákna pro přenos laserového záření ve spektrální oblasti 1900-2300 nm</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of SPIE Vol. 10142

ISBN

978-1-5106-0734-7

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

9

Strana od-do

—

Název nakladatele

The International Society for Optical Engineering (SPIE)

Místo vydání

Bellingham WA

Místo konání akce

Jasná

Datum konání akce

5. 9. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000393152700048