KYW Crystal - An Overview
KYW Crystal - An Overview
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, compared to its counterpart Yb:KGW, can be a outstanding content that performs an essential position in laser technological know-how. Its Major operate is usually to generate ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the pulse
FIG. four. Autocorrelation perform of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong active aspect for an output electrical power of seven-hundred mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the similar measurements of these chemical elements as many as one hundred% of Yb-doping might be achieved. This exceptional attribute permits ytterbium to go ahead and take location of yttrium with virtually no disruption on the crystal’s lattice.
Adhesion Test Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that fulfills LT-ninety specifications onto the lens film layer. The tape was affixed totally and after that removed vertically. This method was done three times, causing no blistering or peeling.
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Spatial construction of the beam plus the corresponding depth profiles I within the output on the laser.
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Nonetheless, click here the moment Nd3+:YAG turned commercially out there, the interest in CaWO4 dropped sharply. In later several years, particular other tungstate crystals started to appeal to a great deal of awareness.
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This tandem of characteristics has far-achieving implications, notably in the construction of compact still powerfull lasers.
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Simultaneously, a shorter laser wavelength can be received; it can be done to operate which has a quantum defect properly down below 1%. For a consequence, the heat generation is often so small that this partly compensates the decreased thermal conductivity.