Self Q switching in bulk Yb:KGd(WO4)2 laser

Self-Q-switching is observed in a bulk Yb:KGd(WO4)2 oscillator without any additional modulating elements. The output power reaches 434.4 mW at a pump power of 13.67 W, corresponding to pulse repetition rate of 125 kHz and a pulse duration of 2.5 \mu s, respectively. The mechanism of self-pulse form