KYW Crystal - An Overview
KYW Crystal - An Overview
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The get bandwidth e.g. of Yb:KGW and Yb:KYW is extremely significant in comparison with that of Yb:YAG. This enables for large wavelength tunability and for Significantly shorter pulse durations from manner-locked lasers. Values nicely beneath one hundred fs are attained with passive manner locking.
The comparison with Eyeglasses is suitable Considering that the big obtain bandwidth permits e.g. tungstate femtosecond lasers and tunable lasers to compete with glass lasers.
time. Crystals with the compound melts congruently at 1007 oC, even so melt crystallization of top of the range crystal is extremely hard resulting from period transition at ~920 oC. The top seeded Alternative system from
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW mainly because of the equivalent measurements of those chemical features as much as a hundred% of Yb-doping might be attained. This exclusive characteristic permits ytterbium to take the spot of yttrium with nearly no disruption for the crystal’s lattice.
The monoclinic crystal constructions results in a purely natural birefringence, assisting to steer clear of thermally induced polarization rotation and depolarization loss.
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Tungstates have a tendency to own superior Raman coefficients (�?Raman scattering). Therefore, they're able to create important Raman achieve at reasonable optical intensities. It is feasible to make use of the laser crystal itself like a Raman converter.
For tungstates, the ytterbium doping concentration can be quite higher without the need of important quenching as the changed ions have an incredibly identical ion radius, and also the inter-ion distance is fairly large.
Large-ability repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical apps
The thermal conductivity of frequent double tungstates is of the buy to 3–four W/(K m) �?which is not bad as opposed with other laser crystals (Despite the fact that a number of periods under for YAG), and fairly big when compared Using the thermal conductivity of normal Eyeglasses.
Li2WO4-WO3 flux was properly used decreasing the growth temperature underneath 900 oC. According to single crystal x-ray measurements, the crystal corresponds into the P2/n space team.
The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at place temperature had been calculated. The emission spectrum and life span on the three F 4 fired up state have been decided. Making use of standard and modified Judd–Ofelt theories, the depth parameters as well as the radiative lifetimes had been calculated and great settlement with the experimental final results was acquired for each theories.
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