Abstract
A high-power (>1 W) pure Kerr-lens mode-locked bulk Yb:KGW laser with multimode fiber-coupled diode pumping was demonstrated. The laser delivered 240fs pulses with 2.3W of average output power at 86.8MHz, corresponding to 97kW of peak power and 26nJ of pulse energy. The shortest generated pulse duration was 120fs with 1.2W of output power. The self-starting regime was also observed with a background continuous-wave component. The laser exhibited more than an order of magnitude higher output power when compared to the previously reported bulk Yb-ion-doped lasers with multimode laser diode pumping systems.
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