The Definitive Guide to KYW Crystal
The Definitive Guide to KYW Crystal
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The Yb:KYW crystal’s proficiency in light absorption at all around 981 nm makes the crystal like minded for diode pumping. It truly is even further Increased by its exceptional effectiveness in this process, coupled with its low quantum defect.
FIG. four. Autocorrelation function of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Lively element for an output electric power of 700 mW. The width of
This paper describes a femtosecond laser regenerative amplifier depending on two Yb:KYW crystals with direct longitudinal pumping by effective linear arrays of semiconductor injection lasers having fiber output. To prevent spectral narrowing all through amplification as well as corresponding lengthening on the amplified pulse when it really is compressed, a mix of two Yb:KYW crystals ended up employed, 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 using a cotton fabric soaked in alcohol, the film area showed no indications of peeling or scratches.
FIG. one. Optical structure of the laser with direct pumping While using the radiation of semiconductor injection lasers. LD is undoubtedly an IPG Photonics laser diode with fiber output
A higher brightnessQ-switched oscillator and regenerative amplifier dependant on a dual-crystal Yb:KGW laser
For tungstates, the ytterbium doping concentration can here be quite large with out considerable quenching because the changed ions have an exceedingly comparable ion radius, as well as inter-ion length is pretty large.
Even so, once Nd3+:YAG grew to become commercially out there, the interest in CaWO4 dropped sharply. In later on yrs, certain other tungstate crystals started to draw in loads of interest.
When ytterbium-doped laser attain media generally exhibit a little quantum defect, ytterbium-doped tungstates allow for for particularly small values. For instance, a 1030-nm Yb:YAG laser would Usually be pumped about 940 nm, whereas Yb:KGW or Yb:KYW could be most proficiently pumped close to 981 nm.
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Yb:KYW crystal (Yb-doped potassium yttrium tungstate) as compared to its counterpart Yb:KGW, is usually a extraordinary product that performs a vital part in laser engineering. Its Main function would be to make ultrashort pulses of light, spanning just some hundred femtoseconds.
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