High‐power all‐fiber thulium lasers have gained considerable interest in recent times due to
their distinct characteristics and versatile applications in the medical and industrial sectors …

The most important components for application in high-power all-fiber lasers and amplifiers
are, most of all, power combiners, but also mode field adaptors. This paper summarizes …

High-power lasers operating at the 2 μm wavelength domain have gained considerable
interest in recent times owing to their distinct characteristics and versatile applications in the …

We demonstrated two methods of increasing the bandwidth of a broadband light source
based on amplified spontaneous emission in thulium-doped fibres. Firstly, we have shown …

A high-power, narrow-linewidth, continuous-wave, thulium-doped fiber laser (TDFL) based
on a master-oscillator power-amplifier (MOPA) was experimentally demonstrated. The main …

New construction of a silica-based multi-ring profile of Tm 3+ doped fiber laser is presented.
Optimisation of both multi-ring refractive index profile and active ions distribution towards …

In this work, we demonstrate a three-stage all-fiber master oscillator power amplifier (MOPA)
system emitting over 40 W of continuous-wave (CW) output power at~ 1.5 µm. The setup …

An experimental study of an all-fiber tunable thulium-doped fiber laser based on an abrupt-
tapered in-fiber interferometer is presented. A microfiber filter with length of 6 mm and …

In this paper, we demonstrate the performance of self-fabricated passive fiber components in
a laser and amplifiers setups operating at~ 1.55 μm wavelength. Three different types of …

Silica optical fibers doped with rare-earth elements are key components of high-power fiber
lasers operating in near-infrared region up to 2.1 μm. In this contribution we deal with …