The STA-01 Yb:YAG laser series consists of passively Q-switched high-repetition-rate single-longitudinal-mode microlasers operating near 1030 nm. Special cavity design provides stable linearly polarized sub-nanosecond pulses at repetition rates up to 25 kHz without shot-to-shot mode hopping. Single pulse energies as high as 20 µJ are available in a TEM₀₀ spatial mode. The operating wavelength of Yb:YAG microlasers closely matches the gain curve of Yb-doped fibers resulting in more efficient pulsed fiber laser systems. Mostly suitable for Yb-doped fiber amplifiers seeding, can be usefull in other fields because of high repetition rate and beam quality. The laser consists of laser controller and laser head. Standard laser controller includes power supply, laser diode and TECs drivers, fiber coupled pump LD. The laser can be operated from external or internal trigger mode.