Getting My KYW Crystal To Work
The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is rather significant as opposed with that of Yb:YAG. This permits for wide wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values well below 100 fs are already reached with passive manner locking.The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is a exceptional product that plays a vital job in laser engineering. Its Major perform should be to create ultrashort pulses of sunshine, spanning just some hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at close to 981 nm helps make the crystal like minded for diode pumping. It's additional enhanced by its remarkable performance in this method, coupled with its minimal quantum defect.
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong Energetic component for an output ability of seven hundred mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to the related dimensions of these chemical aspects up to 100% of Yb-doping might be achieved. This one of a kind attribute permits ytterbium to take the position of yttrium with nearly no disruption to the crystal’s lattice.
Before the event of Nd:YAG, Nd3+:CaWO4 was a vital exceptional-earth-doped laser obtain medium. It had been the truth is Utilized in the initial continually running crystal laser.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are utilised as lasing supplies to produce ultrashort (~ a hundred-two hundred fs) higher ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes working at KYW Crystal 981 nm supports compact laser units.
Tungstates are likely to own higher Raman coefficients (�?Raman scattering). Consequently, they're able to generate important Raman get at reasonable optical intensities. It is possible to make use of the laser crystal by itself being a Raman converter.
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... Not merely the placement of crystal in the cavity but will also the amplification axis of crystal has an effect on the laser Procedure significantly, because the absorption and emission cross sections of your crystal are rather distinct according to the orientation of the crystal.
The thermal conductivity of frequent double tungstates is on the purchase to 3–4 W/(K m) �?which is not lousy in contrast with other laser crystals (Even though various periods under for YAG), and fairly big in contrast with the thermal conductivity of regular glasses.
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Inquire RP Photonics for any tips relating to tungstate lasers, such as femtosecond lasers and substantial-electricity lasers.