An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is very significant in contrast with that of Yb:YAG. This enables for extensive wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values very well down below a hundred fs are actually obtained with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is really a remarkable content that plays an important purpose in laser technological know-how. Its Key functionality should be to deliver ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
We existing a dual-crystal Yb:KGW laserthat iscapable to operate for a Q-switched oscillator with output electric power as many as 24 W and pulse size of twenty ns,or for a regenerative amplifier with output electricity as much as 21 W and pulse period under 200 fs just after compression of chirped pulses. Equally lasers have superb beam quality with beam parameter M2
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong Lively factor for an output power of seven-hundred mW. The width of
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW mainly because of the related sizes of those chemical things up to 100% of Yb-doping could possibly be achieved. This exclusive characteristic permits ytterbium to go ahead and take position of yttrium with virtually no disruption to your crystal’s lattice.
Immediately after air drying and subsequent cleansing using a cotton read more fabric soaked in Alcoholic beverages, the movie surface area confirmed no indications of peeling or scratches.
Raman, luminescence and transmission spectra reveal optical features owing into the presence of thulium ions, and therefore the products may be more analyzed within the scope of laser and luminescence purposes.
Tungstates tend to get substantial Raman coefficients (�?Raman scattering). Hence, they can produce considerable Raman obtain at reasonable optical intensities. It is achievable to make use of the laser crystal by itself being a Raman converter.
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Substantial-electric power repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical applications
The thermal conductivity of popular double tungstates is with the buy to 3–four W/(K m) �?which isn't negative in contrast with other laser crystals (although several instances lower than for YAG), and fairly substantial in contrast with the thermal conductivity of regular glasses.
Li2WO4-WO3 flux was successfully applied reducing the growth temperature below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds towards the P2/n Area group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature had been calculated. The emission spectrum and lifetime with the 3 File four fired up point out have been identified. Making use of standard and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes ended up calculated and fantastic agreement With all the experimental outcomes was obtained for equally theories.
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