1.2 kW peak power quasi-continuous-wave thulium-doped fiber laser

Optics Letters 2026 Open access

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Authors: Dieter Panitzek, Michael Písařík, Helena Picmausová, Julian Schaal, Jan Lautenschläger, Dominik Lorenz, Julian Schneider, Marc Eichhorn, Christelle Kieleck
DOI: 10.1364/ol.581863
Cited by: 1
References: 22

Abstract

This Letter investigates a high-power thulium-doped fiber laser in quasi-continuous-wave operation. By modulating six pump diodes, a pump power limited peak power of 1287 W at 2031 nm with 10 µs pulse width was obtained. Moreover, a diffraction limited beam quality factor and no indication of transversal modulation instability were measured. While four-wave mixing was observed, a novel mitigation strategy was investigated. By applying a burst of ten 10 µs pulses instead of a single 100 µs pulse, the maximum of the spectral power for the characteristic sidebands of four-wave mixing was reduced by 7.4 dB.

Fields of Study & Subjects

Photonic Crystal and Fiber Optics Advanced Fiber Optic Sensors Advanced Fiber Laser Technologies

Publication details

Journal / source
Optics Letters
Publisher
Optica Publishing Group
Volume
51
Issue
2
Pages
401–401
Publication date
2 January 2026
Language
EN