Highly efficient Tm-fiber laser resonantly pumped by a 1.7 μm laser diode

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly efficient Tm-fiber laser resonantly pumped by a 1.7 μm laser diode

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Highly efficient Tm-fiber laser resonantly pumped by a 1.7 μm laser diode

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of the Optical Society of America

ISSN

0740-3224

e-ISSN

1520-8540

Svazek periodika

41

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

"E52"-"E55"

Kód UT WoS článku

001346424200001

EID výsledku v databázi Scopus

2-s2.0-85210984685