An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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In realistic terms, the Yb:KYW crystal has uncovered its niche in higher-power laser apps as a result of its capacity to produce superior energy ultrashort laser pulses although protecting a compact size. The interaction of its capabilities �?seamless ytterbium substitution, powerful absorption features, ultrashort pulse technology and effectiveness in energy conversion �?positions the Yb:KYW crystal as being a cornerstone while in the laser technology, masking various fields ranging from scientific investigation to industrial applications.
The comparison with glasses is appropriate since the significant get bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
The Yb:KYW crystal’s proficiency in light-weight absorption at about 981 nm helps make the crystal compatible for diode pumping. It is actually additional Increased by its remarkable efficiency in this process, coupled with its reduced quantum defect.
FIG. 4. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Lively component for an output electric power of 700 mW. The width of
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to the equivalent measurements of those chemical aspects as many as one hundred% of Yb-doping may very well be obtained. This unique attribute permits ytterbium to take the location of yttrium with just about no disruption towards the crystal’s lattice.
The monoclinic crystal buildings ends in a pure birefringence, here helping to stay away from thermally induced polarization rotation and depolarization loss.
Raman, luminescence and transmission spectra expose optical capabilities owing for the presence of thulium ions, and thus the supplies may be further analyzed inside the scope of laser and luminescence purposes.
Spatial structure in the beam as well as the corresponding intensity profiles I within the output with the laser.
For tungstates, the ytterbium doping focus can be very substantial without important quenching as the changed ions have an extremely very similar ion radius, along with the inter-ion length is relatively huge.
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the equivalent sizes of such chemical factors as much as a hundred% of Yb-doping may be accomplished.
The thermal conductivity of typical double tungstates is with the get to 3–four W/(K m) �?which is not undesirable compared with other laser crystals (While numerous situations under for YAG), and rather large in comparison Along with the thermal conductivity of standard Eyeglasses.
Li2WO4-WO3 flux was effectively utilized decreasing The expansion temperature down below 900 oC. Based on solitary crystal x-ray measurements, the crystal corresponds on the P2/n House team.
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Simultaneously, a shorter laser wavelength could be acquired; it can be done to work using a quantum defect very well below one%. Like a consequence, the warmth technology might be so modest that this partly compensates the lessen thermal conductivity.