New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a amazing product that performs an important function in laser technological innovation. Its Principal purpose is usually to make ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at about 981 nm would make the crystal well suited for diode pumping. It really is more Improved by its extraordinary efficiency in this process, coupled with its lower quantum defect.
FIG. 4. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic element for an output electric power of seven hundred mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW due to the very similar measurements of such chemical components as many as 100% of Yb-doping could possibly be reached. This special characteristic permits ytterbium to go ahead and take place of yttrium with practically no disruption towards the crystal’s lattice.
The monoclinic crystal structures brings about a normal birefringence, helping to stay clear of thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and so are utilized as lasing elements to make ultrashort (~ 100-two hundred fs) higher ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser methods.
5 mm aside from the center of the beam caustic. So that you can Look at the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was created website Beforehand and in a exact same condition with simulation [eleven]. As shown in Determine 3(b) with purple dots and line, the CW output electricity is highly depending on the posture of laser crystal plus the experimental outcome coincides perfectly with simulation result. Being a note, multimode operation happened in experiment when the measurement of the pump beam is more substantial than TEM00 cavity manner and it causes larger CW output ability within the displacement area under three.five mm.
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Superior-energy repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical purposes
Though ytterbium-doped laser attain media frequently show a little quantum defect, ytterbium-doped tungstates enable for significantly compact values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped all over 940 nm, While Yb:KGW or Yb:KYW might be most competently pumped all over 981 nm.
This tandem of characteristics has far-reaching implications, specifically in the development of compact nonetheless powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature ended up calculated. The emission spectrum and life span of your three File four energized point out have been decided. Utilizing regular and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes had been calculated and great agreement with the experimental results was attained for both equally theories.
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