The Greatest Guide To KYW Crystal
The Greatest Guide To KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is very huge when compared with that of Yb:YAG. This permits for wide wavelength tunability and for Significantly shorter pulse durations from manner-locked lasers. Values perfectly down below a hundred fs have been accomplished with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is usually a remarkable substance that performs an important role in laser technologies. Its Major perform would be to produce 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 electrical power around 24 W and pulse length of 20 ns,or as being a regenerative amplifier with output electricity approximately 21 W and pulse length beneath 200 fs right after compression of chirped pulses. The two lasers have superb beam high quality with beam parameter M2
FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of the laser with an oblong active aspect for an output electrical power of seven hundred mW. The width of
Ultrafast lasers, with pulse widths of a few picoseconds (10−12 s) or significantly less, allow the time resolution expected in laser-thrilled fluorescence life span spectroscopy and imaging techniques.Additionally, they deliver significant pulse peak powers at higher repetition prices and moderate normal output powers.
Adhesion Test Compliant with MIL-C-675C navy benchmarks, an adhesion exam involved applying a tape that meets LT-ninety technical specs on to the lens film layer. The tape was affixed absolutely and then removed vertically. This procedure was performed thrice, leading to no blistering or peeling.
FIG. one. Optical layout of the laser with immediate pumping Using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
five mm besides the center in the beam caustic. As a way to check the method matching simulation, we executed the experiment with Ng-Slice crystal oscillator, which was designed previously As well as in a identical condition with simulation [eleven]. As revealed in Figure three(b) with red dots and line, the CW output electric power is highly depending on the place of laser crystal and also the experimental outcome coincides perfectly with simulation end result. For a Be aware, multimode Procedure occurred in experiment once the sizing from the pump beam is much larger than TEM00 cavity manner and it leads to better CW output power inside the displacement area underneath three.five mm.
For tungstates, the ytterbium doping focus can be very significant with out important quenching as the replaced ions have an incredibly identical ion radius, as well as the inter-ion distance is fairly significant.
... Not only the place of crystal inside the cavity but in addition the amplification axis of crystal impacts the laser operation significantly, because the absorption and emission cross sections of the crystal are quite distinctive in accordance with the orientation with the crystal.
Whilst ytterbium-doped laser achieve media commonly show a little quantum defect, ytterbium-doped tungstates let for specially smaller values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped all-around 940 nm, While Yb:KGW or Yb:KYW may be most proficiently pumped about 981 nm.
Li2WO4-WO3 flux was effectively utilized cutting down The expansion temperature below 900 oC. In line with solitary crystal x-ray measurements, the crystal corresponds into the P2/n space group.
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