New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, is actually a outstanding content that plays an essential function in laser technology. Its primary purpose would be to create ultrashort pulses of light, spanning just a couple hundred femtoseconds.
We present a twin-crystal Yb:KGW laserthat iscapable to operate being a Q-switched oscillator with output electric power up to 24 W and pulse duration of twenty ns,or to be a regenerative amplifier with output ability as many as 21 W and pulse length down below two hundred fs just after compression of chirped pulses. Both lasers have great beam quality with beam parameter M2
The absorption and emission spectra of Yb:KYW Crystals Display screen powerful peaks at 980 nm and 1030 nm, respectively, ensuring productive energy conversion and superior effectiveness in laser units.
Optical layout of the laser with immediate pumping While using the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output with the radiation, WP is usually a 50 %-wave plate, CL is often a collimating lens, FL can be a focusing lens, AE is surely an active element made from an Yb:KYW crystal, DM is usually a spherical dichroic mirror, M1-M6 are classified as the cavity mirrors, OC would be the output mirror, and SAM is actually a semiconductor saturable-absorber mirror.
Adhesion Take a look at Compliant with MIL-C-675C armed service benchmarks, an adhesion take a look at concerned applying a tape that meets LT-90 technical specs on to the lens film layer. The tape was affixed absolutely after which you can taken off vertically. This treatment was done 3 times, resulting in no blistering or peeling.
Raman, luminescence and transmission spectra reveal optical attributes owing for the presence of thulium ions, and as a consequence the elements could possibly be additional examined while in the scope of check here laser and luminescence applications.
5 mm in addition to the center of the beam caustic. So as to Verify the mode matching simulation, we done the experiment with Ng-cut crystal oscillator, which was formulated previously and in a similar situation with simulation [eleven]. As revealed in Figure 3(b) with purple dots and line, the CW output power is extremely depending on the position of laser crystal along with the experimental final result coincides nicely with simulation consequence. Being a Take note, multimode operation transpired in experiment if the sizing from the pump beam is more substantial than TEM00 cavity manner and it results in greater CW output electricity from the displacement location below 3.5 mm.
For tungstates, the ytterbium doping concentration can be extremely large devoid of significant quenching because the changed ions have an exceptionally identical ion radius, and the inter-ion distance is comparatively significant.
... Not just the placement of crystal in the cavity but in addition the amplification axis of crystal influences the laser operation greatly, because the absorption and emission cross sections in the crystal are quite different in accordance with the orientation from the crystal.
Whilst ytterbium-doped laser attain media generally exhibit a small quantum defect, ytterbium-doped tungstates allow for for particularly small values. As an example, a 1030-nm Yb:YAG laser would Usually be pumped all-around 940 nm, whereas Yb:KGW or Yb:KYW may very well be most effectively pumped all over 981 nm.
Li2WO4-WO3 flux was correctly applied cutting down the growth temperature under 900 oC. In keeping with solitary crystal x-ray measurements, the crystal corresponds to your P2/n Place group.
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Ask RP Photonics for almost any suggestions regarding tungstate lasers, which include femtosecond lasers and high-electric power lasers.