Detailed Notes on KYW Crystal
Detailed Notes on KYW Crystal
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In sensible conditions, the Yb:KYW crystal has uncovered its niche in significant-energy laser apps because of its ability to deliver superior Power ultrashort laser pulses when keeping a compact measurement. The interaction of its options �?seamless ytterbium substitution, strong absorption properties, ultrashort pulse technology and performance in energy conversion �?positions the Yb:KYW crystal as a cornerstone within the laser know-how, covering assorted fields ranging from scientific analysis to industrial apps.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, can be a impressive material that plays an essential part in laser technologies. Its Most important operate is always to generate ultrashort pulses of sunshine, spanning just a few hundred femtoseconds.
We current a dual-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output ability approximately 24 W and pulse duration of 20 ns,or as a regenerative amplifier with output electric power as much as 21 W and pulse length underneath 200 fs just after compression of chirped pulses. Both equally lasers have exceptional beam high quality with beam parameter M2
Color-coded reflectivity of a Bragg mirror for a operate of wavelength and angle with the incident beam.
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW mainly because of the identical measurements of those chemical elements nearly one hundred% of Yb-doping could possibly be accomplished. This one of a kind attribute permits ytterbium to take the put of yttrium with just about no disruption for the crystal’s lattice.
The monoclinic crystal constructions brings about a purely natural birefringence, assisting to avoid thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are employed as lasing resources to crank out ultrashort (~ one hundred-two hundred fs) substantial electric power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser methods.
A superior brightnessQ-switched oscillator and regenerative amplifier determined by a twin-crystal Yb:KGW laser
... at 50 %-height ended up generated in the learn oscillator with selfsynchronization in the axial modes, explained in our previously short article. 21 The new version in the laser, contrary to that explained in our earlier short article, utilized an Yb:KYW crystal with an N pcut (optical axis N p of your index ellipsoid was parallel to your propagation direction of your laser radiation), with the polarization in the produced radiation directed alongside the N m axis.
... Don't just the situation of crystal from the cavity and also the amplification axis of crystal influences the laser Procedure tremendously, as the absorption and emission cross sections on the crystal are quite diverse in accordance with the orientation of the crystal.
The thermal conductivity of typical double tungstates is from the get to three–four W/(K m) �?which isn't bad in comparison with other laser crystals (although various periods less than for YAG), and quite massive in comparison With all the thermal conductivity of regular Eyeglasses.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at place temperature were calculated. The emission spectrum and lifetime of your three F four excited point out ended up decided. Employing normal and modified Judd–Ofelt theories, the intensity parameters along with the radiative lifetimes have been calculated and superior arrangement With all the experimental outcomes was attained for both theories.
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