KYW Crystal - An Overview
KYW Crystal - An Overview
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, can be a extraordinary product that performs an important position in laser know-how. Its Key perform is always to deliver ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
time. Crystals on the compound melts congruently at 1007 oC, nonetheless soften crystallization of high quality crystal is unachievable due to period changeover at ~920 oC. The best seeded Answer strategy from
The absorption and emission spectra of Yb:KYW Crystals display potent peaks at 980 nm and 1030 nm, respectively, making sure productive Vitality conversion and large efficiency in laser systems.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the related sizes of those chemical things as many as a hundred% of Yb-doping can be obtained. This one of a kind attribute permits ytterbium to take the place of yttrium with pretty much no disruption into the crystal’s lattice.
Adhesion Take a look at Compliant with MIL-C-675C military services criteria, an adhesion take a look at included making use of a tape that fulfills LT-90 requirements onto the lens film layer. The tape was affixed fully after which you can taken off vertically. This process was executed 3 times, causing no blistering or peeling.
Raman, luminescence and transmission spectra expose optical attributes owing to your existence of thulium ions, and as a consequence the materials can be more studied in the scope of laser and luminescence applications.
Spatial composition from the beam and also the corresponding intensity profiles I for the output from the laser.
... at half-top have been generated inside of a grasp oscillator with selfsynchronization from the axial modes, explained in our before write-up. 21 The new edition in the laser, in contrast to that explained in our previously article, made use of an Yb:KYW crystal having an N pcut (optical axis N p in the index ellipsoid was parallel to your propagation direction of your laser radiation), With all the polarization with the created radiation directed along the N m axis.
By substituting yttrium with ytterbium while in the crystal lattice check here of Yb:KYW a result of the equivalent sizes of such chemical factors as much as a hundred% of Yb-doping may be accomplished.
Though ytterbium-doped laser gain media usually exhibit a small quantum defect, ytterbium-doped tungstates enable for notably small values. For example, a 1030-nm Yb:YAG laser would Typically be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW could possibly be most successfully pumped around 981 nm.
This tandem of characteristics has considerably-reaching implications, specially in the development of compact but powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were measured. The emission spectrum and lifetime of the three F four excited state have been decided. Working with standard and modified Judd–Ofelt theories, the depth parameters and also the radiative lifetimes were calculated and good settlement with the experimental outcomes was obtained for each theories.
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