Holmium monolithic fiber lasers: An investigation of the fiber Bragg grating spatial dimensions on fiber laser performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F21%3A00555642" target="_blank" >RIV/67985882:_____/21:00555642 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2592374" target="_blank" >http://dx.doi.org/10.1117/12.2592374</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2592374" target="_blank" >10.1117/12.2592374</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Holmium monolithic fiber lasers: An investigation of the fiber Bragg grating spatial dimensions on fiber laser performance

Popis výsledku v původním jazyce

We have investigated how the physical dimensions of a fiber Bragg grating (FBG) may affect the performance of a monolithic fiber laser system. In particular, we perform a series of direct laser inscriptions in a Holmium-doped single mode fiber using the plane-by-plane femtosecond laser inscription method, using exactly the same inscription conditions but having different grating widths. Specifically, the gratings were divided in to three groups, group 1, gratings inscribed with planes having widths smaller of the core size but in the center of the fiber, group 2, gratings inscribed with plane widths similar to the core diameter and group 3, gratings with plane widths larger the core diameter that were extended uniformly in to cladding region. All the gratings were characterized in a fiber laser configuration and their performance were analyzed using as metrics the threshold power, the effective length and the power slope efficiency. We note that all the gratings were designed to have a resonance Bragg wavelength at 2.1 mu m, having the same length and inscribed directly through the fiber coating. The monolithic fiber laser strands were pumped using Thulium-doped fiber laser operating at 1.95 mu m. The results clearly show that the spatial dimensions of the FBGs are certainly an important parameter that is required for consideration during the development of the monolithic fiber lasers, especially for medium and high-power fiber laser systems

Název v anglickém jazyce

Holmium monolithic fiber lasers: An investigation of the fiber Bragg grating spatial dimensions on fiber laser performance

Popis výsledku anglicky

We have investigated how the physical dimensions of a fiber Bragg grating (FBG) may affect the performance of a monolithic fiber laser system. In particular, we perform a series of direct laser inscriptions in a Holmium-doped single mode fiber using the plane-by-plane femtosecond laser inscription method, using exactly the same inscription conditions but having different grating widths. Specifically, the gratings were divided in to three groups, group 1, gratings inscribed with planes having widths smaller of the core size but in the center of the fiber, group 2, gratings inscribed with plane widths similar to the core diameter and group 3, gratings with plane widths larger the core diameter that were extended uniformly in to cladding region. All the gratings were characterized in a fiber laser configuration and their performance were analyzed using as metrics the threshold power, the effective length and the power slope efficiency. We note that all the gratings were designed to have a resonance Bragg wavelength at 2.1 mu m, having the same length and inscribed directly through the fiber coating. The monolithic fiber laser strands were pumped using Thulium-doped fiber laser operating at 1.95 mu m. The results clearly show that the spatial dimensions of the FBGs are certainly an important parameter that is required for consideration during the development of the monolithic fiber lasers, especially for medium and high-power fiber laser systems

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of SPIE

ISBN

978-1-5106-4381-9

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

9

Strana od-do

117730L

Název nakladatele

SPIE

Místo vydání

BELLINGHAM

Místo konání akce

Virtual, Online

Datum konání akce

19. 4. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000696183900009