Diode-pumped ultrafast Yb:KGW laser with 56 fs pulses and multi-100 kW peak power based on SESAM and Kerr-lens mode locking

Akbari, R.; Fedorova, K.A.; Rafailov, E.U. and Major, A. Diode-pumped ultrafast Yb:KGW laser with 56 fs pulses and multi-100 kW peak power based on SESAM and Kerr-lens mode locking. Applied Physics B, 123 (4),

Abstract

A high-power sub-60 fs mode-locked diode-pumped Yb:KGW laser based on hybrid action of an InGaAs quantum-dot saturable absorber mirror and Kerr-lens mode locking was demonstrated. The laser delivered 56 fs pulses with 1.95 W of average power corresponding to 450 kW of peak power. The width of the generated laser spectrum was 20.5 nm, which was near the gain bandwidth limit of the Yb:KGW crystal. To the best of our knowledge, these are the shortest pulses generated from the monoclinic double tungstate crystals (and Yb:KGW laser crystal in particular) and the most powerful in the sub-60 fs regime. At the same time, they are also the shortest pulses produced to date with the help of a quantum-dot-based saturable absorber. High-power operation with a pulse duration of 90 fs and 2.85 W of average output power was also demonstrated.

Publication DOI: https://doi.org/10.1007/s00340-017-6701-3
Divisions: Engineering & Applied Sciences > Institute of Photonics
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Additional Information: The final publication is available at Springer via http://dx.doi.org/10.1007/s00340-017-6701-3
Uncontrolled Keywords: Physics and Astronomy (miscellaneous),Physics and Astronomy(all)

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