The smart Trick of KYW Crystal That No One is Discussing

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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, is really a exceptional material that plays an important function in laser engineering. Its Major function should be to generate ultrashort pulses of light, spanning just a couple hundred femtoseconds.

Femtosecond laser based on Yb:KYW crystals with suppression of spectral narrowing inside of a regenerative amplifier by spectral profiling of the heart beat

FIG. 4. Autocorrelation purpose of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active factor for an output electricity of seven hundred mW. The width of

By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the comparable dimensions of those chemical aspects up to one hundred% of Yb-doping might be accomplished. This unique attribute permits ytterbium to go ahead and take spot of yttrium with pretty much no disruption to your crystal’s lattice.

The monoclinic crystal buildings brings about a purely natural birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization loss.

FIG. 1. Optical format of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output

5 mm besides the middle of the beam caustic. To be able to Verify the mode matching simulation, we done the experiment with Ng-Minimize crystal oscillator, which was designed Beforehand and in a similar affliction with simulation [11]. As proven in Figure 3(b) with crimson dots and line, the CW output electric power is very dependent on the situation of laser crystal and the experimental result coincides nicely with simulation outcome. To be a Take note, multimode Procedure happened in experiment in the event the size on the pump beam is much larger than TEM00 cavity mode and it leads to greater CW output ability within the displacement location underneath three.5 mm.

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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW mainly because of the related measurements of those chemical things up to one hundred% of Yb-doping can be accomplished.

Even though ytterbium-doped laser get media typically exhibit a little quantum defect, ytterbium-doped tungstates make it possible for for especially little values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, whereas Yb:KGW or Yb:KYW could possibly be most successfully pumped about 981 nm.

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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature had been measured. The emission spectrum and life span of the three File 4 fired up condition had been determined. Applying common and modified Judd–Ofelt theories, the intensity parameters plus the radiative lifetimes have been calculated and superior arrangement With all the experimental final results was obtained for both of those theories.

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