Getting My KYW Crystal To Work
Getting My KYW Crystal To Work
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is usually a outstanding substance that performs an essential position in laser technology. Its Major purpose will be to generate ultrashort pulses of light, spanning just a few hundred femtoseconds.
We current a dual-crystal Yb:KGW laserthat iscapable to operate like a Q-switched oscillator with output electric power approximately 24 W and pulse length of twenty ns,or being a regenerative amplifier with output electrical power up to 21 W and pulse period under two hundred fs right after compression of chirped pulses. Both lasers have fantastic beam good quality with beam parameter M2
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By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW mainly because of the comparable measurements of such chemical aspects as much as 100% of Yb-doping can be obtained. This one of a kind characteristic permits ytterbium to take the position of yttrium with just about no disruption towards the crystal’s lattice.
After air drying and subsequent cleansing having a cotton fabric soaked in Alcoholic beverages, the film area showed no indications of peeling or scratches.
FIG. 1. Optical layout of a laser with immediate pumping with the radiation of semiconductor injection lasers. LD is an IPG Photonics laser diode with fiber output
Tungstates tend to get substantial Raman coefficients (�?Raman scattering). Hence, they are able to create important Raman get at average optical intensities. It can be done to utilize the laser crystal alone as a Raman converter.
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Even so, the moment Nd3+:YAG turned commercially available, the interest in CaWO4 dropped sharply. In later a long time, selected other tungstate crystals began to catch the attention of a lot of interest.
Whilst click here ytterbium-doped laser acquire media normally show a small quantum defect, ytterbium-doped tungstates allow for specifically small values. For instance, a 1030-nm Yb:YAG laser would Commonly be pumped about 940 nm, While Yb:KGW or Yb:KYW may be most efficiently pumped close to 981 nm.
This tandem of attributes has much-reaching implications, notably in the development of compact still powerfull lasers.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at area temperature were measured. The emission spectrum and life span in the three F 4 thrilled state were being established. Utilizing conventional and modified Judd–Ofelt theories, the intensity parameters as well as radiative lifetimes ended up calculated and good settlement with the experimental benefits was attained for both theories.
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