The smart Trick of KYW Crystal That No One is Discussing
The smart Trick of KYW Crystal That No One is Discussing
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The comparison with Eyeglasses is appropriate since the huge obtain bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in light absorption at all over 981 nm helps make the crystal well suited for diode pumping. It really is further Improved by its extraordinary efficiency in this method, coupled with its reduced quantum defect.
FIG. four. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of the laser with an oblong Energetic component for an output power of seven hundred mW. The width of
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW a result of the identical sizes of those chemical elements nearly one hundred% of Yb-doping can be realized. This special characteristic permits ytterbium to take the position of yttrium with pretty much no disruption to the crystal’s lattice.
Adhesion Check Compliant with MIL-C-675C armed service standards, an adhesion check associated implementing a tape that fulfills LT-ninety requirements on to the lens movie layer. The tape was affixed totally after which taken out vertically. This method was executed thrice, resulting in no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and are employed as lasing products to crank out ultrashort (~ 100-200 fs) substantial energy pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
5 mm apart from the middle with the beam caustic. In an effort to Check out the mode matching simulation, we done the experiment with Ng-Slice crystal oscillator, which was designed Formerly and in a identical condition with simulation [11]. As proven in Figure three(b) with pink dots and line, the CW output electrical power is very depending on the place of laser crystal and the experimental result coincides well with simulation outcome. As a Be aware, multimode Procedure transpired in experiment if the sizing of your pump beam is much larger than TEM00 cavity manner and it leads to larger CW output electrical power during the displacement region below 3.five mm.
For tungstates, the ytterbium doping focus can be extremely high devoid of considerable quenching because the replaced ions have a really very similar ion radius, plus the inter-ion length is relatively big.
By get more info substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the very similar measurements of those chemical factors approximately 100% of Yb-doping could possibly be reached.
Whilst ytterbium-doped laser attain media commonly exhibit a small quantum defect, ytterbium-doped tungstates enable for specially compact values. By way of example, a 1030-nm Yb:YAG laser would Typically be pumped all-around 940 nm, While Yb:KGW or Yb:KYW could be most effectively pumped all around 981 nm.
This tandem of attributes has far-reaching implications, specially in the development of compact nevertheless powerfull lasers.
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 time with the three File four psyched state were determined. Using typical and modified Judd–Ofelt theories, the depth parameters as well as the radiative lifetimes ended up calculated and great agreement Together with the experimental outcomes was acquired for each theories.
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