5 Simple Statements About KYW Crystal Explained
5 Simple Statements About KYW Crystal Explained
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The obtain bandwidth e.g. of Yb:KGW and Yb:KYW is very significant in contrast with that of Yb:YAG. This enables for huge wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values well under one hundred fs are obtained with passive manner locking.
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The Yb:KYW crystal’s proficiency in light-weight absorption at about 981 nm can make the crystal compatible for diode pumping. It is more Improved by its amazing performance in this method, coupled with its minimal quantum defect.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to the very similar sizes of these chemical components around 100% of Yb-doping may be reached. This exceptional attribute permits ytterbium to take the location of yttrium with practically no disruption towards the crystal’s lattice.
The monoclinic crystal buildings brings about a pure birefringence, helping to stay clear of thermally induced polarization rotation and depolarization decline.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are applied as lasing resources to crank out ultrashort (~ a hundred-two hundred fs) significant electric power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
Spatial construction of the beam and the corresponding depth profiles I for the output on the laser.
... at 50 %-peak have been generated inside of a grasp oscillator with selfsynchronization in the axial modes, explained within our earlier short article. 21 The new version of the laser, compared click here with that described within our before short article, employed an Yb:KYW crystal having an N pcut (optical axis N p on the index ellipsoid was parallel to the propagation course of the laser radiation), Along with the polarization of the produced radiation directed alongside the N m axis.
Even so, at the time Nd3+:YAG became commercially obtainable, the fascination in CaWO4 dropped sharply. In later on decades, certain other tungstate crystals started to catch the attention of lots of focus.
While ytterbium-doped laser acquire media typically exhibit a small quantum defect, ytterbium-doped tungstates permit for specifically tiny values. By way of example, a 1030-nm Yb:YAG laser would Generally be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW could be most efficiently pumped close to 981 nm.
This tandem of attributes has much-achieving implications, especially in the construction of compact still powerfull lasers.
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