The KYW Crystal Diaries
The KYW Crystal Diaries
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time. Crystals on the compound melts congruently at 1007 oC, even so soften crystallization of high quality crystal is not possible on account of section changeover at ~920 oC. The top seeded solution technique from
FIG. 4. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of a laser with an oblong Lively aspect for an output electricity of seven-hundred mW. The width of
By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to related sizes of such chemical components as many as 100% of Yb-doping could possibly be accomplished. This unique attribute permits ytterbium to take the spot of yttrium with just about no disruption towards the crystal’s lattice.
The monoclinic crystal structures brings about a all-natural birefringence, helping to avoid thermally induced polarization rotation and depolarization reduction.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and therefore are used as lasing supplies to crank out ultrashort (~ a hundred-two hundred fs) superior power pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes functioning at 981 nm supports compact laser methods.
Tungstates have a tendency to have large Raman coefficients (�?Raman scattering). Hence, they can produce sizeable Raman obtain at moderate optical intensities. It can be done to use the laser crystal alone being a Raman converter.
... at half-peak have been produced in a very learn oscillator with selfsynchronization of your axial modes, described in our earlier post. 21 The new version with the laser, compared with that described within our before report, used an Yb:KYW crystal having an N pcut (optical axis N p from the index ellipsoid was parallel on the propagation route on the laser radiation), With all the polarization of your produced radiation directed alongside the N m axis.
Higher-power repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical applications
The thermal conductivity of common double tungstates is on the get to three–4 W/(K m) �?which is not bad compared with other laser crystals (Even though several times under for YAG), and fairly significant compared Together with get more info the thermal conductivity of normal Eyeglasses.
Li2WO4-WO3 flux was successfully utilized decreasing The expansion temperature beneath 900 oC. As outlined by one crystal x-ray measurements, the crystal corresponds to the P2/n Place group.
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Concurrently, a shorter laser wavelength could be acquired; it is feasible to function with a quantum defect very well underneath 1%. For a consequence, the heat generation may be so modest that this partly compensates the lower thermal conductivity.