Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is often a outstanding materials that performs a crucial function in laser technology. Its Key function is usually to make ultrashort pulses of light, spanning just a couple hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at all-around 981 nm makes the crystal well matched for diode pumping. It is actually additional Improved by its remarkable efficiency in this process, coupled with its reduced quantum defect.
The absorption and emission spectra of Yb:KYW Crystals Display screen strong peaks at 980 nm and 1030 nm, respectively, ensuring efficient Power conversion and superior overall performance in laser units.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW mainly because of the very similar sizes of those chemical components as many as a hundred% of Yb-doping could possibly be obtained. This distinctive attribute permits ytterbium to go ahead and take spot of yttrium with just about no disruption to your crystal’s lattice.
The monoclinic crystal buildings results in a organic birefringence, assisting to stay clear of thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are applied as lasing products to produce ultrashort (~ one hundred-two hundred fs) superior power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser methods.
Tungstates are likely to acquire large Raman coefficients (�?Raman scattering). Thus, they could deliver sizeable Raman achieve at moderate optical intensities. It is possible to use the laser crystal itself as being a Raman converter.
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Nevertheless, the moment Nd3+:YAG turned commercially out there, the interest in CaWO4 dropped sharply. In later several years, sure other tungstate crystals began to entice a lot of interest.
Although ytterbium-doped laser obtain media usually exhibit a little quantum defect, ytterbium-doped tungstates make it possible for for specially little values. For instance, a 1030-nm Yb:YAG laser would normally be pumped around 940 nm, While Yb:KGW or Yb:KYW could possibly be most efficiently pumped more info all-around 981 nm.
This tandem of attributes has significantly-achieving implications, particularly in the construction of compact but powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature were measured. The emission spectrum and life span from the three F 4 enthusiastic condition were being determined. Utilizing common and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes were being calculated and superior settlement with the experimental results was attained for both of those theories.
Check with RP Photonics for almost any information concerning tungstate lasers, like femtosecond lasers and high-electric power lasers.