New Step by Step Map For KYW Crystal
New Step by Step Map For KYW Crystal
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, is actually a impressive substance that plays an essential part in laser technological innovation. Its Key operate is always to produce ultrashort pulses of sunshine, spanning just a couple hundred femtoseconds.
time. Crystals from the compound melts congruently at 1007 oC, even so melt crystallization of top quality crystal is extremely hard because of stage transition at ~920 oC. The very best seeded solution system from
Shade-coded reflectivity of the Bragg mirror for a functionality of wavelength and angle of the incident beam.
By substituting yttrium with ytterbium from the crystal lattice of Yb:KYW due to the equivalent sizes of these chemical components around one hundred% of Yb-doping may be reached. This exceptional attribute permits ytterbium to take the spot of yttrium with nearly no disruption on the crystal’s lattice.
Adhesion Test Compliant with MIL-C-675C armed forces specifications, an adhesion take a look at included making use of a tape that fulfills LT-ninety requirements onto the lens film layer. The tape was affixed entirely and afterwards taken off vertically. This course of action was executed 3 times, leading to no blistering or peeling.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and they are applied as lasing resources to create ultrashort (~ 100-two hundred fs) large energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes working at 981 nm supports compact laser systems.
5 mm in addition to the center of the beam caustic. To be able to Look at the mode matching simulation, we carried out the experiment with Ng-Minimize crystal oscillator, which was made Formerly As well as in a very same affliction with simulation [eleven]. As shown in Determine three(b) with purple dots and line, the CW output power is very dependent on the situation of laser crystal as well as the experimental result coincides properly with simulation result. Being a note, multimode operation happened in experiment when the measurement of your pump beam is bigger than TEM00 cavity manner and it causes larger CW output electric power in the displacement area underneath three.5 mm.
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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 up to a hundred% of Yb-doping could possibly be accomplished.
Although ytterbium-doped laser obtain media normally show a little quantum defect, ytterbium-doped tungstates let for specially smaller values. Such as, a 1030-nm Yb:YAG laser would Ordinarily be pumped around 940 nm, Whilst Yb:KGW or Yb:KYW may very well be most competently pumped around 981 nm.
This tandem of characteristics has far-reaching implications, significantly in the construction of compact nevertheless powerfull lasers.
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