Highly efficient Tm-fiber laser resonantly pumped by a 1.7 μm laser diode
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00378060" target="_blank" >RIV/68407700:21340/24:00378060 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1364/JOSAB.531551" target="_blank" >https://doi.org/10.1364/JOSAB.531551</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/JOSAB.531551" target="_blank" >10.1364/JOSAB.531551</a>
Alternative languages
Result language
angličtina
Original language name
Highly efficient Tm-fiber laser resonantly pumped by a 1.7 μm laser diode
Original language description
A CW laser diode emitting at 1.7 um was used to unidirectionally pump a thulium-doped fiber laser. A claddingpumped fiber laser resonator consisted of a dichroic (high reflectivity at 2 um, high transparency at 1.7 um) free-space plane mirror, placed between two lenses used to collimate and to focus the pumping radiation, and Fresnel reflection of an active fiber end that serves as an output coupler. For an absorbed power of 11.5 W, an output power of 5.2 W was achieved at a wavelength 1950 nm with a slope efficiency of 70%. The goal of our work is to attract attention to the possibility of pumping thulium fiber lasers resonantly using laser diodes that are already readily available today. Thanks to resonant pumping, compared to cross-relaxation-assisted pumping at 0.8 um, higher efficiency and lower heat generation can be achieved, which can help to reach high mean powers from thulium fiber lasers. An important fact is that both the generated laser radiation and pumping radiation belong to the eye-safe spectral region, which reduces the risk of vision damage.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the Optical Society of America
ISSN
0740-3224
e-ISSN
1520-8540
Volume of the periodical
41
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
4
Pages from-to
"E52"-"E55"
UT code for WoS article
001346424200001
EID of the result in the Scopus database
2-s2.0-85210984685