KYW Crystal - An Overview
KYW Crystal - An Overview
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time. Crystals with the compound melts congruently at 1007 oC, nonetheless melt crystallization of top quality crystal is unattainable because of period changeover at ~920 oC. The very best seeded Option method from
FIG. four. Autocorrelation purpose of the heart beat 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output power of 700 mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW a result of the identical measurements of those chemical aspects as many as a hundred% of Yb-doping can be reached. This unique attribute permits ytterbium to go ahead and take location of yttrium with just about no disruption on the crystal’s lattice.
Following air drying and subsequent cleansing having a cotton cloth soaked in Alcoholic beverages, the film floor confirmed no indications of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are utilized as lasing materials to produce ultrashort (~ a hundred-200 fs) large ability pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser programs.
Tungstates tend to have large Raman coefficients (�?Raman scattering). Hence, they could crank out considerable Raman get at moderate optical intensities. It is achievable to make use of the laser crystal itself as being a Raman converter.
For tungstates, the ytterbium doping concentration can be extremely substantial with no significant quenching since the replaced ions have an exceedingly comparable ion radius, as well as the inter-ion distance is pretty large.
Higher-electricity repetitively pulsed ytterbium lasers with supershort pulse width and immediate diode pumping for technological and biomedical applications
Even though ytterbium-doped laser get media generally exhibit a little quantum defect, ytterbium-doped tungstates make it possible for for especially compact values. For example, a 1030-nm Yb:YAG laser would Typically be pumped all around 940 nm, Whilst Yb:KGW or Yb:KYW can be most proficiently pumped all-around 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)2) crystal at room temperature had been calculated. The emission spectrum and life time from the 3 F four thrilled point out were decided. Working with conventional and modified Judd–Ofelt check here theories, the intensity parameters and the radiative lifetimes were calculated and great arrangement While using the experimental effects was attained for both of those theories.
Simultaneously, a shorter laser wavelength may be attained; it can be done to operate that has a quantum defect perfectly underneath 1%. To be a consequence, the warmth technology is often so tiny this partly compensates the lessen thermal conductivity.