The Definitive Guide to KYW Crystal
The Definitive Guide to 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 substance that performs a very important job in laser technologies. Its Main perform would be to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
The Yb:KYW crystal’s proficiency in gentle absorption at all-around 981 nm would make the crystal like minded for diode pumping. It is even more Improved by its extraordinary efficiency in this process, coupled with its low quantum defect.
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular Energetic aspect for an output electricity of seven-hundred mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW due to comparable measurements of these chemical aspects nearly 100% of Yb-doping may very well be obtained. This distinctive characteristic permits ytterbium to take the spot of yttrium with almost no disruption on the crystal’s lattice.
Just after air drying and subsequent cleaning with a cotton cloth soaked in Alcoholic beverages, the movie surface area confirmed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are employed as lasing components to create ultrashort (~ 100-two hundred fs) substantial electrical power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser programs.
5 mm aside from read more the center of the beam caustic. So that you can check the manner matching simulation, we done the experiment with Ng-Lower crystal oscillator, which was created Beforehand and in a same ailment with simulation [11]. As revealed in Figure three(b) with red dots and line, the CW output energy is very dependent on the situation of laser crystal as well as the experimental consequence coincides nicely with simulation consequence. As a Notice, multimode Procedure occurred in experiment once the sizing from the pump beam is larger sized than TEM00 cavity mode and it brings about bigger CW output energy inside the displacement area down below three.5 mm.
... at fifty percent-top were being generated inside a learn oscillator with selfsynchronization on the axial modes, explained inside our before write-up. 21 The new edition of your laser, unlike that explained inside our previously article, applied an Yb:KYW crystal with the N pcut (optical axis N p of the index ellipsoid was parallel towards the propagation direction in the laser radiation), With all the polarization of the created radiation directed together the N m axis.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW a result of the identical sizes of these chemical things up to a hundred% of Yb-doping can be achieved.
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Li2WO4-WO3 flux was properly used lowering The expansion temperature down below 900 oC. Based on solitary crystal x-ray measurements, the crystal corresponds to your P2/n space group.
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