Fascination About KYW Crystal
Fascination About KYW Crystal
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The attain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This allows for vast wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values well beneath 100 fs happen to be accomplished with passive method locking.
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time. Crystals with the compound melts congruently at 1007 oC, on the other hand melt crystallization of top of the range crystal is extremely hard on account of phase changeover at ~920 oC. The very best seeded solution process from
FIG. four. Autocorrelation function of the heart beat 共a兲and spectrum 共b兲of the laser with an oblong active aspect for an output electricity of seven hundred mW. The width of
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW because of the related dimensions of those chemical features around a hundred% of Yb-doping might be obtained. This distinctive attribute permits ytterbium to take the area of yttrium with just about no disruption to your crystal’s lattice.
The monoclinic crystal structures brings about a pure birefringence, helping to stay away from thermally induced polarization rotation and depolarization loss.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and they are applied as lasing resources to crank out ultrashort (~ one hundred-200 fs) superior energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser methods.
A significant brightnessQ-switched oscillator and regenerative amplifier based upon a dual-crystal Yb:KGW laser
For tungstates, the ytterbium doping focus can be quite large without major quenching because the changed ions have a really equivalent ion radius, and also the inter-ion length is pretty significant.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to very similar measurements of such chemical aspects around a hundred% of Yb-doping may be accomplished.
The thermal conductivity of common double tungstates is with the order to three–four W/(K m) �?which is not lousy in contrast with other laser crystals (although many situations under for YAG), and quite big when compared with the thermal conductivity of standard glasses.
Li2WO4-WO3 flux was effectively utilized cutting down The expansion temperature under 900 oC. According to solitary crystal x-ray measurements, the crystal corresponds to the P2/n space group.
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At the same time, a shorter laser wavelength can be attained; it is feasible to operate that has a quantum defect effectively below one%. As a consequence, the warmth generation might be so little this partly compensates the lower thermal conductivity.