KYW Crystal - An Overview
KYW Crystal - An Overview
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In sensible conditions, the Yb:KYW crystal has uncovered its specialized niche in substantial-electricity laser apps because of its capacity to make large Vitality ultrashort laser pulses whilst maintaining a compact sizing. The interplay of its attributes �?seamless ytterbium substitution, strong absorption properties, ultrashort pulse era and performance in Electricity conversion �?positions the Yb:KYW crystal like a cornerstone in the laser technological know-how, covering assorted fields ranging from scientific exploration to industrial applications.
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We existing a dual-crystal Yb:KGW laserthat iscapable to operate as being a Q-switched oscillator with output power as much as 24 W and pulse length of twenty ns,or for a regenerative amplifier with output electric power as many as 21 W and pulse length under 200 fs following compression of chirped pulses. Both lasers have fantastic beam excellent with beam parameter M2
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This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers possessing fiber output. To stop spectral narrowing throughout amplification and the corresponding lengthening with the amplified pulse when it really is compressed, a combination of two Yb:KYW crystals ended up employed, Using the spectral maxima with the amplification shifted relative to each other and with spectral profiling of the amplified radiation.
Immediately after air drying and subsequent cleaning by using a cotton fabric soaked in alcohol, the film area showed no signs of peeling or scratches.
FIG. 1. Optical layout of a laser with direct pumping While using the radiation of semiconductor injection lasers. LD is surely an IPG Photonics laser diode with fiber output
5 mm besides the center with the beam caustic. In an effort to check the method matching simulation, we executed the experiment with Ng-Lower crystal oscillator, which was made Formerly As well as in a identical affliction with simulation [11]. As proven in Figure three(b) with pink dots and line, the CW output power is extremely dependent on the situation of laser crystal plus the experimental result coincides effectively with simulation consequence. For a Take note, click here multimode Procedure happened in experiment when the size from the pump beam is greater than TEM00 cavity method and it brings about better CW output electric power from the displacement area under 3.five mm.
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to the very similar sizes of such chemical components nearly 100% of Yb-doping may very well be achieved.
Although ytterbium-doped laser attain media frequently show a small quantum defect, ytterbium-doped tungstates permit for particularly compact values. One example is, a 1030-nm Yb:YAG laser would Generally be pumped about 940 nm, Whilst Yb:KGW or Yb:KYW may be most efficiently pumped all over 981 nm.
This tandem of characteristics has significantly-achieving implications, significantly in the development of compact yet powerfull lasers.
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