High-power thulium-doped fiber laser in an all-fiber configuration

Yauhen Baravets; Filip Todorov; Pavel Honzatko

doi:10.1117/12.2263526

23 December 2016 High-power thulium-doped fiber laser in an all-fiber configuration

Yauhen Baravets, Filip Todorov, Pavel Honzatko

Proceedings Volume 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 101420G (2016) https://doi.org/10.1117/12.2263526
Event: 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2016, Jasna, Slovakia

Abstract

High-power Tm-doped fiber lasers are greatly suitable for various applications, such as material processing, medicine, environmental monitoring and topography. In this work we present an all-fiber narrowband CW laser in near fundamental mode operation based on a Tm-doped double-clad active fiber pumped by 793 nm laser diodes with a central wavelength stabilized at 2039 nm by a fiber Bragg grating. The achieved output power is 60 W with a slope efficiency of 46%. The measured beam quality factor is less than 1.4. Further increasing of the output power is possible using various power scaling techniques, for example, coherent combination of several Tm-doped fiber lasers. The developed fiber laser could be employed for welding, cutting and marking of thermoplastics in industry, minimally invasive surgery in medicine or sensors in lidar systems. Future improvements of thulium fiber lasers are possible due to the extremely wide gain-bandwidth of the active medium and the rapid growth of 2-μm fiber components production.

Citation Download Citation

Yauhen Baravets, Filip Todorov, and Pavel Honzatko "High-power thulium-doped fiber laser in an all-fiber configuration", Proc. SPIE 10142, 20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 101420G (23 December 2016); https://doi.org/10.1117/12.2263526

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