The Definitive Guide to KYW Crystal
The Definitive Guide to KYW Crystal
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The comparison with Eyeglasses is suitable Because the big gain bandwidth will allow e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the heart beat
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW a result of the identical dimensions of such chemical things nearly a hundred% of Yb-doping could be accomplished. This special characteristic permits ytterbium to take the location of yttrium with virtually no disruption to the crystal’s lattice.
The monoclinic crystal structures brings about a purely natural birefringence, assisting to avoid thermally induced polarization rotation and depolarization reduction.
Raman, luminescence and transmission spectra expose optical characteristics owing for the presence of thulium ions, and so the supplies could be additional researched within the scope of laser and luminescence applications.
Spatial construction on the beam along with the corresponding intensity profiles I in the output from the laser.
For tungstates, the ytterbium doping concentration can be quite high devoid of substantial quenching since the changed ions have a really very similar ion radius, and the inter-ion distance is comparatively massive.
... Don't just the position of crystal within the cavity but additionally the amplification axis of crystal impacts the laser operation significantly, because the absorption and emission cross sections of the crystal are quite various according to the orientation of the crystal.
The thermal conductivity of typical double tungstates is of your purchase to three–4 W/(K m) �?which isn't poor as opposed with other laser crystals (Despite the fact that several moments lower than for YAG), and rather large in comparison with the thermal conductivity of standard Eyeglasses.
Li2WO4-WO3 flux was properly used lowering The expansion temperature underneath 900 oC. Based on single crystal x-ray measurements, the crystal corresponds on the P2/n Place group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were being measured. The emission spectrum and lifetime on the three File four psyched point out were established. Employing typical and modified Judd–Ofelt theories, the depth parameters as well as radiative lifetimes were calculated and good agreement Using the experimental outcomes was obtained for each theories.
Concurrently, a shorter laser more info wavelength might be obtained; it is achievable to function with a quantum defect very well down below one%. For a consequence, the heat era can be so smaller that this partly compensates the decreased thermal conductivity.