Details, Fiction and KYW Crystal
Details, Fiction and KYW Crystal
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The gain bandwidth e.g. of Yb:KGW and Yb:KYW is rather huge when compared with that of Yb:YAG. This enables for huge wavelength tunability and for much shorter pulse durations from method-locked lasers. Values properly underneath 100 fs happen to be attained with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is really a remarkable materials that plays a crucial function in laser know-how. Its Principal functionality should be to generate ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
We present a dual-crystal Yb:KGW laserthat iscapable to function as being a Q-switched oscillator with output electrical power up to 24 W and pulse length of 20 ns,or to be a regenerative amplifier with output power nearly 21 W and pulse duration under 200 fs after compression of chirped pulses. Both lasers have superb beam top quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Display screen strong peaks at 980 nm and 1030 nm, respectively, making sure productive Vitality conversion and higher general performance in laser systems.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the related dimensions of such chemical features as many as a hundred% of Yb-doping can be obtained. This special characteristic permits ytterbium to take the spot of yttrium with just about no disruption into the crystal’s lattice.
The monoclinic crystal structures leads to a normal birefringence, helping to steer clear of thermally induced polarization rotation and depolarization decline.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are employed as lasing resources to generate ultrashort (~ 100-two hundred fs) superior electrical power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes operating at 981 nm supports compact laser devices.
Tungstates are likely to obtain large Raman coefficients (�?Raman scattering). Consequently, they can make sizeable Raman gain at moderate optical intensities. It can be done to make use of the laser crystal by itself as being a Raman converter.
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Large-electrical power repetitively pulsed ytterbium lasers get more info with supershort pulse width and direct diode pumping for technological and biomedical apps
Even though ytterbium-doped laser achieve media usually exhibit a small quantum defect, ytterbium-doped tungstates make it possible for for specifically tiny values. For instance, a 1030-nm Yb:YAG laser would normally be pumped all over 940 nm, Whilst Yb:KGW or Yb:KYW may be most efficiently pumped around 981 nm.
Li2WO4-WO3 flux was properly applied reducing The expansion temperature down below 900 oC. In accordance with solitary crystal x-ray measurements, the crystal corresponds into the P2/n Place group.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at area temperature ended up calculated. The emission spectrum and lifetime in the three File 4 enthusiastic condition ended up identified. Making use of normal and modified Judd–Ofelt theories, the depth parameters plus the radiative lifetimes had been calculated and great settlement Along with the experimental success was acquired for equally theories.
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