Delivery of 1.9μm laser radiation using air-core Bragg fibers

Kód výsledku v IS VaVaI

RIV/67985882:_____/16:00473111 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1117/12.2263314

DOI - Digital Object Identifier

10.1117/12.2263314

Jazyk výsledku

angličtina

Název v původním jazyce

Delivery of 1.9μm 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 1.9μm 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

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

GA16-10019S: Braggovská vlákna pro přenos laserového záření ve spektrální oblasti 1900-2300 nm

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

20TH SLOVAK-CZECH-POLISH OPTICAL CONFERENCE ON WAVE AND QUANTUM ASPECTS OF CONTEMPORARY OPTICS

ISBN

978-1-5106-0733-0

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

9

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellinghem

Místo konání akce

Jasna

Datum konání akce

5. 9. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000393152700048