KYW Crystal - An Overview
KYW Crystal - An Overview
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared to its counterpart Yb:KGW, is a outstanding materials that plays an essential job in laser technological know-how. Its Most important functionality is to create ultrashort pulses of light, spanning just some hundred femtoseconds.
Femtosecond laser determined by Yb:KYW crystals with suppression of spectral narrowing inside a regenerative amplifier by spectral profiling of the pulse
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By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW mainly because of the comparable sizes of these chemical aspects approximately a hundred% of Yb-doping could be accomplished. This distinctive characteristic permits ytterbium to go ahead and take place of yttrium with virtually no disruption for the crystal’s lattice.
Adhesion Take a look at Compliant with MIL-C-675C military specifications, an adhesion take a look at associated implementing a tape that satisfies LT-ninety technical specs on to the lens movie layer. The tape was affixed entirely and afterwards eradicated vertically. This procedure was executed thrice, leading to no blistering or peeling.
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Spatial composition with the beam as well as the corresponding intensity profiles I for the output in the laser.
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... Don't just the position of crystal inside the cavity but in addition the amplification axis of crystal influences the laser Procedure considerably, since the absorption and emission cross sections with the crystal are rather diverse based here on the orientation on the crystal.
The thermal conductivity of prevalent double tungstates is in the get to 3–four W/(K m) �?which is not terrible in contrast with other laser crystals (although many times a lot less than for YAG), and pretty huge as opposed With all the thermal conductivity of regular Eyeglasses.
Li2WO4-WO3 flux was properly used lowering the growth temperature underneath 900 oC. According to solitary crystal x-ray measurements, the crystal corresponds to your P2/n space group.
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Concurrently, a shorter laser wavelength is often acquired; it is possible to function using a quantum defect well underneath 1%. To be a consequence, the heat technology may be so compact that this partly compensates the lessen thermal conductivity.