Fascination About KYW Crystal
Fascination About KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very huge when compared with that of Yb:YAG. This allows for extensive wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values effectively underneath a hundred fs have been accomplished with passive manner locking.
The comparison with glasses is acceptable Considering that the substantial achieve bandwidth makes it possible for e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
The Yb:KYW crystal’s proficiency in mild absorption at all-around 981 nm makes the crystal well matched for diode pumping. It really is additional Increased by its remarkable performance in this process, coupled with its lower quantum defect.
FIG. 4. Autocorrelation purpose of the pulse 共a兲and spectrum 共b兲of the laser with an oblong Energetic element for an output energy of seven-hundred mW. The width of
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to related measurements of such chemical features up to 100% of Yb-doping might be attained. This unique attribute permits ytterbium to go ahead and take position of yttrium with just about no disruption into the crystal’s lattice.
Adhesion Take a look at Compliant with MIL-C-675C military services requirements, an adhesion examination included making use of a tape that fulfills LT-90 requirements on to the lens film layer. The tape was affixed entirely after which you can eradicated vertically. This procedure was performed thrice, causing no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical capabilities owing into the presence of thulium ions, and thus the elements may very well be further more examined during the scope of laser and luminescence purposes.
A high brightnessQ-switched oscillator and regenerative amplifier based on a twin-crystal Yb:KGW laser
For tungstates, the ytterbium click here doping focus can be very large without the need of substantial quenching because the changed ions have a really equivalent ion radius, plus the inter-ion length is fairly substantial.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW because of the identical measurements of such chemical factors up to one hundred% of Yb-doping could be reached.
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This tandem of attributes has much-reaching implications, notably in the development of compact nonetheless powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature ended up calculated. The emission spectrum and life span from the 3 F 4 thrilled state had been determined. Utilizing normal and modified Judd–Ofelt theories, the intensity parameters and also the radiative lifetimes were calculated and good settlement While using the experimental results was attained for both equally theories.
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