We report detailed experimental data aiming for rigorous investigation of Tm: YLF laser
performance, especially with a focus on tuning behavior. Continuous-wave (cw) lasing …

The 3 H 4→ 3 H 5 transition of Thulium ions (Tm 3+), which features laser emission at~ 2.3
μm is studied in details. We revise the conditions for efficient laser operation using a rate …

We report on Czochralski growth, detailed ground-and excited-state absorption and
emission spectroscopy and highly-efficient mid-infrared (∼ 2.3 µm) laser operation of a …

We report on highly efficient and power-scalable laser operation in a thulium-doped high-
phonon-energy crystal [monoclinic double tungstate, KL u (WO 4) 2] on the 3 H 4→ 3 H 5 T …

We report on the first continuous-wave mid-infrared Tm: Y 3 Al 5 O 12 laser operating on the
3 H 4→ 3 H 5 transition. The 3.2 at.% Tm: Y 3 Al 5 O 12 laser generated a maximum output …

We have investigated the spectroscopic properties of Tm: YLF material around 1900 nm in
detail to understand its amplification performance at cryogenic temperatures. Fluorescence …

We report on a novel power scaling strategy for thulium waveguide (WG) lasers relying on in-
band pum** by high-brightness Raman fiber lasers (RFLs) and the use of liquid-phase …

Excited-state absorption (ESA) is a key process for upconversion pum** schemes of
thulium (Tm^ 3+) doped laser materials. We have systematically studied two ESA transitions …

Single-crystalline layers of 12 at.% Tb^ 3+, 5 at.% Gd^ 3+: LiYF_4 were grown by the liquid
phase epitaxy method on (001) oriented bulk undoped LiYF_4 substrates using LiF as a …

Abstract Highly doped (20 at.%) Yb 3+: LiYF 4 single-crystalline thin films are grown on
(001)-oriented bulk undoped LiYF 4 substrates by Liquid Phase Epitaxy using lithium …