Considerations To Know About KYW Crystal
Considerations To Know About KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is extremely huge in contrast with that of Yb:YAG. This allows for wide wavelength tunability and for much shorter pulse durations from manner-locked lasers. Values perfectly down below one hundred fs are realized with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is really a exceptional substance that performs an essential position in laser technological know-how. Its Main operate is always to crank out ultrashort pulses of light, spanning just a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at all-around 981 nm will make the crystal compatible for diode pumping. It truly is more enhanced by its outstanding performance in this method, coupled with its lower quantum defect.
The absorption and emission spectra of Yb:KYW Crystals display robust peaks at 980 nm and 1030 nm, respectively, guaranteeing economical Power conversion and significant general performance in laser systems.
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW as a result of very similar measurements of these chemical elements nearly one hundred% of Yb-doping may be attained. This distinctive attribute permits ytterbium to take the place of yttrium with pretty much no disruption to your crystal’s lattice.
Following air drying and subsequent cleansing that has a cotton fabric soaked in alcohol, the film surface showed no signs of peeling or scratches.
FIG. one. Optical structure of a laser with direct pumping Together with the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
Tungstates have a tendency to obtain superior Raman coefficients (�?Raman scattering). Therefore, they will make major Raman achieve at moderate optical intensities. It can be done to use the click here laser crystal alone being a Raman converter.
For tungstates, the ytterbium doping concentration can be quite superior with out considerable quenching as the changed ions have an extremely comparable ion radius, and the inter-ion length is comparatively large.
... Not merely the place of crystal from the cavity but will also the amplification axis of crystal affects the laser operation drastically, as the absorption and emission cross sections in the crystal are really distinct according to the orientation with the crystal.
The thermal conductivity of widespread double tungstates is in the order to three–4 W/(K m) �?which is not undesirable in comparison with other laser crystals (Even though quite a few moments under for YAG), and fairly substantial in contrast with the thermal conductivity of regular glasses.
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