The smart Trick of KYW Crystal That Nobody is Discussing
The smart Trick of KYW Crystal That Nobody is Discussing
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is usually a remarkable materials that plays a vital position in laser know-how. Its Key purpose will be to crank out ultrashort pulses of light, spanning just a few hundred femtoseconds.
Femtosecond laser determined by Yb:KYW crystals with suppression of spectral narrowing in a regenerative amplifier by spectral profiling of the pulse
FIG. 4. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW mainly because of the very similar measurements of these chemical factors up to a hundred% of Yb-doping could be attained. This exclusive characteristic permits ytterbium to go ahead and take spot of yttrium with almost no disruption towards the crystal’s lattice.
The monoclinic crystal buildings ends in a all-natural birefringence, helping to prevent thermally induced polarization rotation and depolarization loss.
Raman, luminescence and transmission spectra expose optical options owing towards the presence of thulium ions, and so the materials could possibly be even more researched while in the scope of laser and luminescence programs.
Spatial construction from the beam as well as the corresponding intensity profiles I at the output of your laser.
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... Not merely the placement of crystal from get more info the cavity but will also the amplification axis of crystal has an effect on the laser Procedure tremendously, since the absorption and emission cross sections from the crystal are very unique based on the orientation of your crystal.
The thermal conductivity of common double tungstates is with the purchase to three–4 W/(K m) �?which isn't poor as opposed with other laser crystals (Though several situations below for YAG), and quite substantial in contrast Along with the thermal conductivity of standard glasses.
Li2WO4-WO3 flux was properly applied lowering the growth temperature under 900 oC. As outlined by one crystal x-ray measurements, the crystal corresponds into the P2/n House group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature were being calculated. The emission spectrum and life span of the 3 F four excited state were determined. Utilizing regular and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes were calculated and great agreement Using the experimental outcomes was obtained for both of those theories.
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