Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, when compared with its counterpart Yb:KGW, is often a amazing substance that plays an essential role in laser technology. Its Most important purpose is usually to create ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
The Yb:KYW crystal’s proficiency in mild absorption at close to 981 nm would make the crystal well matched for diode pumping. It can be further more enhanced by its remarkable effectiveness in this process, coupled with its low quantum defect.
FIG. 4. Autocorrelation functionality of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic element for an output electric power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by impressive linear arrays of semiconductor injection lasers owning fiber output. To circumvent spectral narrowing through amplification plus the corresponding lengthening on the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima on the amplification shifted relative to each other and with spectral profiling with the amplified radiation.
Prior to the development of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser get medium. It had been in reality Utilized in the 1st continuously working crystal laser.
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Tungstates are likely to obtain superior Raman coefficients (�?Raman scattering). Hence, they will generate important Raman gain at average optical intensities. It is achievable to make use of the laser crystal alone for a Raman converter.
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By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW mainly because of the very similar measurements of these chemical features approximately more info 100% of Yb-doping can be realized.
The thermal conductivity of widespread double tungstates is from the get to 3–four W/(K m) �?which is not terrible in contrast with other laser crystals (Whilst many times below for YAG), and fairly massive as opposed With all the thermal conductivity of usual Eyeglasses.
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