KYW Crystal - An Overview
KYW Crystal - An Overview
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a exceptional materials that plays a significant part in laser engineering. Its primary functionality is usually to make ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the heart beat
The absorption and emission spectra of Yb:KYW Crystals Display screen sturdy peaks at 980 nm and 1030 nm, respectively, guaranteeing economical Strength conversion and significant performance in laser methods.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW mainly because of the similar sizes of those chemical aspects nearly a hundred% of Yb-doping could be accomplished. This special characteristic permits ytterbium to go ahead and take position of yttrium with pretty much no disruption for the crystal’s lattice.
Adhesion Examination Compliant with MIL-C-675C armed service benchmarks, an adhesion test involved applying a tape that fulfills LT-90 specifications onto the lens movie layer. The tape was affixed totally and after that taken out vertically. This treatment was done 3 times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical characteristics owing to the presence of thulium ions, and thus the components may very well be further more examined during the scope of laser and luminescence purposes.
Spatial framework from the beam along with the corresponding depth profiles I on the output in the laser.
For tungstates, the ytterbium doping focus can be quite superior with out important quenching as the changed ions have a very comparable ion radius, along with the inter-ion distance is fairly massive.
... Don't just the position of crystal within the cavity and also the amplification axis of crystal affects the laser operation significantly, because the absorption and emission cross sections of the crystal are fairly distinct according to the orientation from the crystal.
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Li2WO4-WO3 flux was correctly applied reducing The expansion temperature under 900 oC. As outlined by one crystal x-ray measurements, the crystal corresponds towards the P2/n Room group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at room temperature have been calculated. The emission spectrum and life span of the 3 F 4 enthusiastic point out were being determined. Applying regular and modified Judd–Ofelt theories, the intensity parameters along with the radiative lifetimes read more were being calculated and good agreement Using the experimental final results was obtained for each theories.
Concurrently, a shorter laser wavelength is usually acquired; it is possible to work by using a quantum defect nicely down below 1%. As a consequence, the warmth technology might be so modest that this partly compensates the decreased thermal conductivity.