High-power industrial-grade ultrafast Thulium-doped fiber laser system
Year: 2026
Type: article
Abstract: In this contribution, we report on a compact industrial grade 2 µm ultrafast laser platform based on Thulium doped fiber technology delivering 20 W of average output power. Starting from a mode-locked master oscillator an all-fiber-based amplification chain leads to the generation of 150 µJ pulses at a repetition rate of 200 kHz. After compression, this system delivers pulses with a duration of < 400 fs, a pulse energy of up to 100 µJ, and a near-diffraction-limited beam quality (M² < 1.3) at a repetition rate of 200 kHz. The all-fiber integration of the source results in an excellent long-term power and pointing stability. The unique parameter combination of high average power and pulse energy, combined with a fast warm-up time, excellent beam quality, a pulse on demand feature and its small footprint render this source an excellent candidate targeting applications in materials processing and scientific instrumentation in the short wavelength infrared spectral region.
Source: Procedia CIRP
Authors: Sarath Maratha Palli, Tobias Heuermann, Qian Xu, Matthias Scheidt, Christian Gaida, Tino Eidam
Institution: Active Fiber Systems (Germany)
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7202269880