Abstract
Passive mode locking of the ytterbium doped orthovanadate crystal Yb:LuVO(4) is reported for the first time. We demonstrate what we believe to be the shortest pulses directly generated with an Yb-doped crystalline laser using a semiconductor saturable absorber. The pulses at 1036 nm have a duration as short as 58 fs for an average power of 85 mW.
Highlights
The uniaxial orthovanadate crystals are recognized as attractive host materials for the development of efficient, compact, diode-pumped solid-state lasers
Passive mode locking of the ytterbium doped orthovanadate crystal Yb:LuVO4 is reported for the first time
We demonstrate what we believe to be the shortest pulses directly generated with an Yb-doped crystalline laser using a semiconductor saturable absorber
Summary
The uniaxial orthovanadate crystals are recognized as attractive host materials for the development of efficient, compact, diode-pumped solid-state lasers. The broad emission spectra of Yb-doped vanadates make them interesting for tunable laser operation in the 1 μm spectral range and for reliable and efficient diode-pumped femtosecond lasers Both mode locking with a semiconductor saturable absorber mirror (SESAM) and Kerr lens mode-locking have been demonstrated for Yb:YVO4 [6,7]. The broad and smooth emission spectrum and the somewhat higher emission cross sections of Yb:LuVO4 make it very interesting to evaluate its potential for passive modelocking in the sub-100 fs regime This is due to the fact that the basic limitation of the present Yb-laser ultrafast technology which is based on diode pumping, in comparison to the widely spread Ti:sapphire laser technology which requires frequency doubled pump sources, is connected with the available bandwidths and the pulse durations that can be achieved. For the first time to our knowledge, mode-locked operation of Yb:LuVO4 with Ti:sapphire laser pumping using a SESAM
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