An Unbiased View of KYW Crystal
An Unbiased View of KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is really a extraordinary material that performs a significant job in laser technologies. Its Main perform would be to produce ultrashort pulses of light, spanning just some hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light absorption at close to 981 nm will make the crystal well suited for diode pumping. It really is even further Increased by its outstanding performance in this process, coupled with its minimal quantum defect.
FIG. four. Autocorrelation function of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular active element for an output ability of seven hundred mW. The width of
This paper describes a femtosecond laser regenerative amplifier determined by two Yb:KYW crystals with direct longitudinal pumping by potent linear arrays of semiconductor injection lasers having fiber output. To circumvent spectral narrowing all through amplification as well as corresponding lengthening of the amplified pulse when it is compressed, a combination of two Yb:KYW crystals were made use of, Along with the spectral maxima in the amplification shifted relative to one another and with spectral profiling in the amplified radiation.
After air drying and subsequent cleansing which has a cotton cloth soaked in Liquor, the movie surface showed no indications of peeling or scratches.
FIG. 1. Optical structure of a laser with immediate pumping Together with the radiation of semiconductor injection lasers. LD is definitely an IPG Photonics laser diode with fiber output
Tungstates are inclined to obtain higher Raman coefficients (�?Raman scattering). As a result, they can generate substantial Raman obtain at moderate optical intensities. It is feasible to use the laser crystal alone being a Raman converter.
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By substituting yttrium with ytterbium in the crystal lattice of Yb:KYW due to the similar dimensions of these chemical elements nearly one hundred% of Yb-doping might be achieved.
When ytterbium-doped laser achieve media frequently exhibit a small quantum defect, ytterbium-doped tungstates let for especially smaller values. For example, a 1030-nm Yb:YAG laser would Generally be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW might be most efficiently pumped all around 981 nm.
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Ask RP Photonics for almost any suggestions about tungstate lasers, like femtosecond lasers and higher-ability lasers.