The KYW Crystal Diaries
The KYW Crystal Diaries
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, is often a remarkable material that performs a crucial job in laser technological innovation. Its Key purpose is usually to create ultrashort pulses of light, spanning just a couple hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at about 981 nm can make the crystal compatible for diode pumping. It really is even more Improved by its exceptional efficiency in this method, coupled with its very low quantum defect.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW due to very similar dimensions of such chemical features up to 100% of Yb-doping might be accomplished. This special characteristic permits ytterbium to take the position of yttrium with nearly no disruption into the crystal’s lattice.
Adhesion Exam Compliant with MIL-C-675C army expectations, an adhesion take a look at associated implementing a tape that meets LT-ninety specifications on to the lens movie layer. The tape was affixed entirely after which you can removed vertically. This process was performed 3 times, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and so are utilised as lasing components to produce ultrashort (~ a hundred-200 fs) high ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser systems.
five mm besides the center in the beam caustic. As a way to Verify 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 3(b) with pink dots and line, the CW output energy is very depending on the position of laser crystal as well as experimental consequence coincides nicely with simulation final result. For a Be aware, multimode operation occurred in experiment once the sizing from the pump beam is much larger than TEM00 cavity manner and it leads to increased CW output ability within the displacement area beneath 3.5 mm.
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By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW a result of the equivalent sizes of those chemical factors as much as a hundred% of Yb-doping may very well be attained.
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This tandem of attributes has much-reaching implications, notably in the construction of compact still powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were being measured. The emission spectrum and lifetime on the three File four excited state had been established. Employing typical more info and modified Judd–Ofelt theories, the depth parameters as well as radiative lifetimes were being calculated and good agreement Using the experimental outcomes was obtained for both theories.
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