100-W $Q$ -switched Cryogenically Cooled Yb:YAG Laser

This work describes a cryogenic, electro-optically
Q
-switched Yb:YAG laser that generates 114-W average TEM
₀₀
power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration is 16 ns full-width at half-maximum, and
M

²
is less than 1.05.