KYW Crystal Secrets
KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is really a outstanding material that performs a significant part in laser know-how. Its Most important perform will be to produce ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
Femtosecond laser depending on Yb:KYW crystals with suppression of spectral narrowing inside of a regenerative amplifier by spectral profiling of the pulse
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW as a result of identical sizes of these chemical factors as many as a hundred% of Yb-doping could be accomplished. This exclusive characteristic permits ytterbium to take the position of yttrium with pretty much no disruption to the crystal’s lattice.
The monoclinic crystal constructions leads to a organic birefringence, helping to stay away from thermally induced polarization rotation and depolarization loss.
Raman, luminescence and transmission spectra reveal optical characteristics owing to the presence of thulium ions, and thus the materials might be more researched within the scope of laser and luminescence applications.
A higher brightnessQ-switched oscillator and regenerative amplifier according to a dual-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be extremely higher with no sizeable quenching because the changed ions have an incredibly comparable ion radius, as well as the inter-ion distance is pretty significant.
... Not only the place of crystal inside the cavity and also the amplification axis of crystal influences the laser Procedure considerably, since the absorption and emission cross sections with the crystal are pretty distinctive according to the orientation of the crystal.
The thermal conductivity of widespread double tungstates is of the buy to 3–4 W/(K m) �?which isn't negative as opposed with other laser crystals (Despite the fact that several moments lower than for YAG), and fairly substantial compared Along with the thermal conductivity of typical Eyeglasses.
Li2WO4-WO3 flux was correctly applied cutting down The expansion temperature below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds to your P2/n website Area group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at space temperature have been calculated. The emission spectrum and life span of the 3 F 4 fired up condition ended up identified. Using regular and modified Judd–Ofelt theories, the intensity parameters as well as the radiative lifetimes had been calculated and very good arrangement Along with the experimental effects was received for equally theories.
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