5 Simple Statements About KYW Crystal Explained
5 Simple Statements About KYW Crystal Explained
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, is actually a outstanding material that plays an essential function in laser technologies. Its Main operate is usually to deliver ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
We present a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output power as many as 24 W and pulse length of 20 ns,or like a regenerative amplifier with output power nearly 21 W and pulse length beneath two hundred fs following compression of chirped pulses. Equally lasers have exceptional beam high quality with beam parameter M2
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Ultrafast lasers, with pulse widths of some picoseconds (10−twelve s) or a lot less, enable time resolution demanded in laser-thrilled fluorescence lifetime spectroscopy and imaging techniques.Additionally, they produce superior pulse peak powers at higher repetition fees and moderate common output powers.
Before the development of Nd:YAG, Nd3+:CaWO4 was a vital rare-earth-doped laser obtain medium. It absolutely was actually Utilized in the main constantly running crystal laser.
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Tungstates are likely to possess substantial Raman coefficients (�?Raman scattering). For that reason, they're able to deliver substantial Raman get at moderate optical intensities. It is feasible to make use of the laser crystal itself being a Raman converter.
... at 50 percent-top have been generated inside of a grasp oscillator with selfsynchronization in the axial modes, explained inside our before posting. 21 The new edition from the laser, compared with that explained inside our before article, utilized an Yb:KYW crystal with the N pcut (optical axis N p on the index ellipsoid was parallel to the propagation path from the laser radiation), Together with the polarization in the produced radiation directed alongside the N m axis.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW mainly because of the equivalent sizes of these chemical factors as many as a hundred% of Yb-doping might be realized.
While ytterbium-doped laser gain media commonly show a small quantum defect, ytterbium-doped tungstates allow for for specifically small values. For example, a 1030-nm Yb:YAG laser would Generally be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most competently pumped close to 981 nm.
Li2WO4-WO3 flux was successfully utilized lessening The expansion temperature below 900 oC. According to solitary crystal x-ray measurements, the crystal corresponds to your P2/n Room 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 4 enthusiastic state have been determined. Employing standard and modified Judd–Ofelt theories, the depth parameters and the radiative lifetimes have been calculated and good arrangement While using the experimental final results was attained for each theories.
Concurrently, a shorter laser wavelength can be acquired; it is achievable to work having a quantum defect properly underneath one%. To be a consequence, the warmth generation may be so tiny that this partly compensates the decrease thermal conductivity.