An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The comparison with Eyeglasses is acceptable Considering that the huge acquire bandwidth allows e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the heartbeat
FIG. four. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of a laser with an oblong Lively aspect for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW as a result of comparable sizes of such chemical things as much as one hundred% of Yb-doping might be accomplished. This exclusive attribute permits ytterbium to go ahead and take place of yttrium with almost no disruption to the crystal’s lattice.
Just after air drying and subsequent cleansing using a cotton cloth soaked in Alcoholic beverages, the movie surface confirmed no signs of peeling or scratches.
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Spatial composition of your beam as well as corresponding depth profiles I for the output in the laser.
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... Not just the place of crystal inside the cavity but in addition the amplification axis of crystal influences the laser operation enormously, as the absorption and emission cross sections of your crystal are pretty different according to the orientation of the crystal.
The thermal conductivity of typical double tungstates is of your purchase to three–four W/(K m) �?which isn't lousy in comparison with other laser crystals (although many instances fewer than for YAG), and relatively substantial in contrast Along with the thermal conductivity of common glasses.
Li2WO4-WO3 flux was efficiently used decreasing The expansion temperature under 900 oC. According to one crystal x-ray measurements, the crystal corresponds to your P2/n House group.
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At the same time, a shorter laser wavelength is often obtained; it is possible to work using a quantum defect perfectly under one%. As being a consequence, the warmth technology may be so smaller that this partly compensates the reduced thermal conductivity.