Volume Bragg Grating Wavelength Selected Tm:YLF Slab Laser Operating at 1890 nm

Analysis on preferential free running laser wavelength and performance modeling of Tm3+-doped YAP and YLF

“…5, the threshold will accordingly be too high to achieve high efficiency of laser output at 1.89 μm. As a result, for the purpose of achieving 1.89 μm laser output from Tm:YLF, wavelength selection elements such as VBG should always be used [14]. Besides 1.89 and 1.91 μm, the Tm:YLF can also emit at 1.94 μm by use of a wavelength selection element [13].…”

“…Also by using VBG but stabilizing the laser wavelength at 1.94 μm, Dergachev et al obtained 30 W of laser output power from Tm:YLF [13]. And recently, as much as 80 W of laser output power at 1890 nm from a Tm:YLF slab laser was obtained by Strauss et al who used a VBG as a wavelength selection element too [14].…”

Investigation of high-power diode-end-pumped Tm:YLF laser in slab geometry

“…Our aim is to develop a high-power slab Tm:YLF laser which can be used to pump a Ho-doped laser. Previous reports demonstrated that high power can be achieved from the end-pumping Tm:YLF lasers with rod or slab crystals [3][4][5]. Up to 148 W of continuous wave (CW) at 1912 nm [6] from a diode-end-pumped Tm:YLF laser was achieved by Schellhorn and co-workers, which has a large beam quality of M 2…”