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

0473096 - ÚFE 2017 RIV US eng C - Conference Paper (international conference)
Baravets, Yauhen - Todorov, Filip - Honzátko, Pavel
High-power thulium-doped fiber laser in an all-fiber configuration.
20TH SLOVAK-CZECH-POLISH OPTICAL CONFERENCE ON WAVE AND QUANTUM ASPECTS OF CONTEMPORARY OPTICS. Vol. 10142. Bellinghem: SPIE, 2016 - (Senderáková, D.), č. článku 101420G. ISBN 978-1-5106-0733-0. ISSN 0277-786X. E-ISSN 1996-786X.
[20th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics (SCPOC). Jasna (SK), 05.09.2016-09.09.2016]
R&D Projects: GA TA ČR(CZ) TH01010997; GA MŠMT(CZ) LD15122
Institutional support: RVO:67985882
Keywords : Fiber Laser * Thulium * Cladding Pumping
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

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-mu m fiber components production
Permanent Link: http://hdl.handle.net/11104/0270259