Highly Repetitive 2 μm Holmium Solid-State Lasers: Power Scaling, Mechanical Stability, and Nonlinear Conversion

Solid-state lasers based on holmium-doped yttrium aluminum garnet (Ho3+:YAG) are promising laser sources in the 2 µm range. In this work, advanced concepts are transferred to Ho3+:YAG lasers, enabling power scaling and an increased mechanical stability. This includes the investigation of a segmented laser crystal, the design of a master oscillator power amplifier system as well as a Porro prism-based resonator geometry. Further, the 2µm laser is used to pump an optical parametric oscillator.