Detailed Notes on KYW Crystal
Detailed Notes on KYW Crystal
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In useful phrases, the Yb:KYW crystal has found its market in substantial-electricity laser apps due to its ability to produce higher Electrical power ultrashort laser pulses whilst maintaining a compact dimension. The interplay of its attributes �?seamless ytterbium substitution, powerful absorption qualities, ultrashort pulse generation and efficiency in Electrical power conversion �?positions the Yb:KYW crystal for a cornerstone from the laser know-how, covering numerous fields ranging from scientific investigate to industrial programs.
The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison with its counterpart Yb:KGW, is actually a remarkable materials that plays a very important function in laser technological know-how. Its Major perform is usually to crank out ultrashort pulses of sunshine, spanning only a few hundred femtoseconds.
We existing a twin-crystal Yb:KGW laserthat iscapable to function as being a Q-switched oscillator with output ability approximately 24 W and pulse size of 20 ns,or as being a regenerative amplifier with output ability around 21 W and pulse period down below 200 fs soon after compression of chirped pulses. Both lasers have exceptional beam quality with beam parameter M2
FIG. 4. Autocorrelation operate of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular active component for an output electric power of 700 mW. The width of
By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to comparable dimensions of those chemical aspects approximately a hundred% of Yb-doping could be accomplished. This special characteristic permits ytterbium to take the area of yttrium with nearly no disruption to your crystal’s lattice.
Soon after air drying and subsequent cleaning which has a cotton cloth soaked in alcohol, the movie surface showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and so are applied as lasing products to generate ultrashort (~ a hundred-two hundred fs) significant ability pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
Tungstates are likely to possess significant Raman coefficients (�?Raman scattering). As a result, they are able to deliver sizeable Raman achieve at moderate optical intensities. It is feasible to use the laser crystal alone as a Raman converter.
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By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW as a result of comparable sizes of such chemical aspects around 100% of Yb-doping can be realized.
Though ytterbium-doped laser obtain media frequently exhibit a little quantum defect, ytterbium-doped tungstates permit for specially little values. One example is, a 1030-nm Yb:YAG laser would Usually be pumped all over 940 nm, Whilst Yb:KGW or Yb:KYW may be most effectively pumped all over 981 nm.
This tandem of attributes has much-achieving implications, particularly in the construction of compact yet powerfull lasers.
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