Uwe Griebner

TL;DR: Evidence is presented that strong space-time coupling results in a time-dependent interference zone and significant changes of contrast, envelope function, and spatial frequency spectrum in comparison with continuous wave data.

TL;DR: The as-fabricated GG-SAM with ultra-broad bandwidth, ultrafast recovery time, low absorption, and low cost has great potential as a universal saturable absorber mirror for mode-locking of various bulk lasers with unprecedented spectral coverage.

TL;DR: Stable passive Q-switching of a Tm: LiYF4 laser is obtained using polycrystalline Cr2+:‬ZnS as a saturable absorber with substantial improvement and highest values for a passively Q- Switched diode-pumped Tm laser operating at ∼1.9‬μm.

TL;DR: A mid-infrared (mid-IR) optical parametric chirped pulse amplification (OPCPA) system generating few-cycle pulses with multi-gigawatt peak power at a 1 kHz repetition rate is reported, representing record values for high-energy mid-IR OPCPAs beyond 4 μm.

TL;DR: By pumping with a cw diode-pumped Nd:YAG laser operating at 946nm laser operation of a new Yb-doped phosphate glass with 440mW cw output power and a slope efficiency of 48% with respect to the absorbed pump power was achieved at room temperature.