Rumored Buzz on KYW Crystal
Rumored Buzz on KYW Crystal
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The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is rather substantial compared with that of Yb:YAG. This allows for extensive wavelength tunability and for A great deal shorter pulse durations from manner-locked lasers. Values nicely under one hundred fs are actually achieved with passive mode locking.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is often a extraordinary material that plays an important part in laser engineering. Its Major function will be to create ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at close to 981 nm makes the crystal compatible for diode pumping. It truly is even further enhanced by its amazing effectiveness in this process, coupled with its reduced quantum defect.
FIG. four. Autocorrelation functionality of the heart beat 共a兲and spectrum 共b兲of a laser with an oblong Lively component for an output energy of seven hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by powerful linear arrays of semiconductor injection lasers acquiring fiber output. To prevent spectral narrowing during amplification and the corresponding lengthening with the amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals ended up utilized, with the spectral maxima on the amplification shifted relative to one another and with spectral profiling of your amplified radiation.
Prior to the development of Nd:YAG, Nd3+:CaWO4 was an check here important scarce-earth-doped laser gain medium. It was actually used in the primary repeatedly functioning crystal laser.
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Spatial structure in the beam as well as the corresponding intensity profiles I within the output on the laser.
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By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the similar measurements of these chemical features approximately 100% of Yb-doping can be reached.
Even though ytterbium-doped laser achieve media frequently exhibit a small quantum defect, ytterbium-doped tungstates make it possible for for especially smaller values. For instance, a 1030-nm Yb:YAG laser would Generally be pumped all-around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most effectively pumped all around 981 nm.
Li2WO4-WO3 flux was productively utilized cutting down The expansion temperature down below 900 oC. Based on single crystal x-ray measurements, the crystal corresponds for the P2/n Area team.
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