KYW Crystal Secrets
KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, is actually a remarkable materials that performs a crucial function in laser technological innovation. Its Principal purpose will be to deliver ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
We present a dual-crystal Yb:KGW laserthat iscapable to work as being a Q-switched oscillator with output electricity as many as 24 W and pulse duration of twenty ns,or as being a regenerative amplifier with output electrical power as many as 21 W and pulse period down below 200 fs after compression of chirped pulses. Both of those lasers have superb beam quality with beam parameter M2
Color-coded reflectivity of the Bragg mirror like a functionality of wavelength and angle with the incident beam.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW due to related dimensions of these chemical features as much as one hundred% of Yb-doping might be accomplished. This one of a kind characteristic permits ytterbium to go ahead and take place of yttrium with just about no disruption for the crystal’s lattice.
Immediately after air drying and subsequent cleaning that has a cotton cloth soaked in Liquor, the film surface area showed no indications of peeling or scratches.
FIG. one. Optical structure of the laser with direct pumping Using the radiation of semiconductor injection lasers. LD is really an get more info IPG Photonics laser diode with fiber output
Tungstates are inclined to possess significant Raman coefficients (�?Raman scattering). Thus, they can produce substantial Raman achieve at moderate optical intensities. It is feasible to utilize the laser crystal alone being a Raman converter.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW because of the equivalent sizes of these chemical components as much as 100% of Yb-doping might be accomplished.
Though ytterbium-doped laser acquire media commonly show a small quantum defect, ytterbium-doped tungstates make it possible for for especially modest values. Such as, a 1030-nm Yb:YAG laser would Usually be pumped close to 940 nm, While Yb:KGW or Yb:KYW may very well be most competently pumped about 981 nm.
This tandem of attributes has considerably-reaching implications, specifically in the development of compact nevertheless powerfull lasers.
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