Thulium-Doped 1940-and 2034-nm Fiber Amplifiers: Towards Highly Efficient, High-Power All-Fiber Laser Systems

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F24%3A00581721" target="_blank" >RIV/67985882:_____/24:00581721 - isvavai.cz</a>

Result on the web

<a href="https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10201887" target="_blank" >https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10201887</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JLT.2023.3301397" target="_blank" >10.1109/JLT.2023.3301397</a>

Result language

angličtina

Original language name

Thulium-Doped 1940-and 2034-nm Fiber Amplifiers: Towards Highly Efficient, High-Power All-Fiber Laser Systems

Original language description

We report on high-power thulium-doped fiber amplifiers built using a nanoparticle-doped double-clad, pedestal-style large mode area fiber. The applied nanoparticle doping technique allowed achieving uniform high doping concentrations of Al2O3 and Tm2O3 across the fiber core. The fiber outer layer was fluorine-doped providing a decrease in pump radiation interaction with the coating, thereby enhancing the reliability of the entire laser system under high-power operation. The laser system operating at a wavelength of 2034 nm delivered an output power of up to 441 W with a slope efficiency of 57.4%, and the electro-optical conversion efficiency of the amplifier was 25%. The 1940-nm-wavelength all-fiber amplifier seeded with a narrowband Tm-doped fiber laser provided an output power of up to 273 W with a slope efficiency as high as 61.8%. In both cases the output spectrum was characterized by a 3-dB spectral bandwidth below 160 pm. Moreover, a special splicing procedure for large mode area fibers transmitting high power radiation was proposed and successfully demonstrated.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Lightwave Technology

ISSN

0733-8724

e-ISSN

1558-2213

Volume of the periodical

42

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

339-346

UT code for WoS article

001129777400028

EID of the result in the Scopus database

2-s2.0-85166774303