Considerations To Know About KYW Crystal
Considerations To Know About KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is really a extraordinary materials that performs an essential role in laser technological know-how. Its Key function would be to create ultrashort pulses of light, spanning just some hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at all over 981 nm makes the crystal compatible for diode pumping. It really is even further Increased by its exceptional effectiveness in this process, coupled with its minimal quantum defect.
FIG. four. Autocorrelation operate of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular Lively aspect for an output electrical power of 700 mW. The width of
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the very similar sizes of such chemical elements as much as a hundred% of Yb-doping may be realized. This exceptional characteristic permits ytterbium to take the position of yttrium with nearly no disruption to the crystal’s lattice.
The monoclinic crystal structures leads to a natural birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization decline.
FIG. one. Optical structure of a laser with immediate pumping Along with the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
A high brightnessQ-switched oscillator and regenerative amplifier based on a twin-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can be extremely high without having major quenching because the changed ions have an incredibly very similar ion radius, as well as inter-ion distance is pretty large.
Large-energy repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical purposes
Whilst ytterbium-doped laser achieve media frequently exhibit a little quantum defect, ytterbium-doped tungstates allow for for particularly compact values. For example, a 1030-nm Yb:YAG laser would Usually be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW may be most successfully pumped about 981 nm.
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