Günter Huber

Fabrication of a Stress-Induced Nd:YAG Channel Waveguide Laser Using fs-Laser Pulses

Using a fs-laser tracks were written in Nd:YAG. Due to stress induced birefringence waveguiding is possible in channels surrounding the tracks. Laser oscillation was achieved with an output-power of 132mW at 284mW of pump-power.

High Power Operation of Yb:LuVO 4 and Yb:YVO 4 Crystals in the Thin-Disk Laser Setup

A thin-disk Yb:LuVO4 laser with 13 W output power at 33% optical-to-optical efficiency and slope efficiency of 50% is demonstrated for the first time. Power scaling of Yb:YVO4 delivers 10 W with 43% slope efficiency.

New Visible SrF2:Pr3+ Ceramic Laser at 639 nm

For the first time to our knowledge SrF2:Pr3+ fluoride ceramics was developed and visible 639 nm wavelength oscillations were obtained in diode pumped CW mode with slope efficiency above 9%.

Continuous-Wave Yb-Doped Sesquioxide Thin Disk Lasers with up to 300 W Output Power and 74% Efficiency

We obtained 301W of output power, 88% slope efficiency, and 74% optical-to-optical efficiency with VBG-diode-pumped Yb:Lu2O3 thin disk lasers. Yb:Sc2O3 and Yb:LuScO3 showed comparable performance, delivering 264W and 250W of output power, respectively.

Quenching processes in Yb lasers; Correlation to the valence stability of the Yb ion

We present an overview of quenching processes in Yb-doped lasers. Experiments made on Yb:YAG crystals and Yb-doped fiber lasers show that induced losses appear upon UV-irradiation through a charge-transfer process. The valence stability of the Yb ion is believed to be the key issue for the quenching processes in Yb-doped high power laser systems.

Passively Mode-Locked Yb:LuScO 3 Oscillator

Mode locking of the novel mixed sesquioxide crystal Yb:LuScO3 employing a SESAM is demonstrated. Pulse durations as short as 111 fs were obtained using a diode-laser pump source.

Efficient Mode-Locked Yb:Lu 2 O 3 Thin Disk Laser with an Average Power of 103 W

We demonstrate power scaling of an Yb:Lu2O3 thin-disk laser to an average power of 103 W setting a new record for mode-locked laser oscillators. The laser generates 885-fs pulses with an optical-to-optical efficiency of 42%.

Thin-Disk Laser Operation of Yb 3+ -Doped NaGd(WO 4 ) 2

We report on high-power Yb:NaGd(WO4)2 laser using the thin-disk geometry. 16.5W of output power at 1.026μm with a slope efficiency of 59% was obtained from a 10.7at%-doped 0.1mm-thin disk under diode-pumping with 42W at 975nm.

Efficient Femtosecond Yb:Lu 2 O 3 Thin Disk Laser

We demonstrate the first mode-locked Yb:Lu2O 3 thin disk laser, obtaining 370-fs pulses with 20.5 W average power. The 43% optical-to-optical efficiency obtained with 523-fs pulses is higher than for previous mode-locked thin disk lasers.

Miniature Lasers on the Basis of Yb:Sc 2 O 3

Yb:Sc2O3 was investigated in a miniature plane-plane resonator and compared with Yb:YAG. A record slope efficiency around 80 % was measured with a 0.1 % Yb-doped 3 mm-rod.