Kerr lens mode-locked Yb:CALGO thin-disk laser
Graumann, Ivan J
Wittwer, Valentin J
Optics Letters, Optical society of America, 2018/43/4/879-882
We demonstrate the first Kerr lens mode-locked Yb:CaGdAlO<sub>4</sub> (Yb:CALGO) thin-disk laser oscillator. It generates pulses with a duration of 30 fs at a central wavelength of 1048 nm and a repetition rate of 124 MHz. The laser emits the shortest pulses generated by a thin-disk laser oscillator, equal to the shortest pulse duration obtained by Yb-doped bulk oscillators. The average output power is currently limited to 150 mW by the low gain and limited disk quality. We expect that more suitable Yb:CALGO disks will enable substantially higher power levels with similar pulse durations.
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