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 spectral bandwidth of the pulse 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.
|Title of host publication||2017 Photonics North, PN 2017|
|Publication status||Published - 2 Nov 2017|
|Event||2017 Photonics North, PN 2017 - Ottawa, Canada|
Duration: 6 Jun 2017 → 8 Jun 2017
|Conference||2017 Photonics North, PN 2017|
|Period||6/06/17 → 8/06/17|
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- diode-pumped laser
- femtosecond pulses
- passive mode locking
- Yb-doped crystal