Self-Q-switched Er:Lu2O3 laser at 2.74 pin

A diode-pumped self-Q-switched 2.74 mu m Er:Lu2O3 crystal solid-state laser has been experimentally and theo-retically studied. Without any additional modulation elements, stable self-Q-switched pulses with a pulse width of 145.3 ns, a repetition rate of 227.8 kHz, and an average output power of 877 mW were generated. Considering the excited-state absorption on the laser photons of the Er:Lu2O3 crystal, we have simulated the dynamic process of self-pulsed generation by solving the rate equations numerically. The simulation results are consistent with the typicalcharacteristics of aQ-switched laser.(c) 2023 Optica Publishing Group