KYW Crystal - An Overview
KYW Crystal - An Overview
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In simple conditions, the Yb:KYW crystal has discovered its market in substantial-electric power laser purposes because of its capacity to produce substantial Electricity ultrashort laser pulses when protecting a compact dimensions. The interaction of its functions �?seamless ytterbium substitution, robust absorption qualities, ultrashort pulse generation and performance in Electricity conversion �?positions the Yb:KYW crystal like a cornerstone in the laser technology, masking assorted fields ranging from scientific investigate to industrial programs.
The comparison with Eyeglasses is appropriate For the reason that huge get bandwidth lets e.g. tungstate femtosecond lasers and tunable lasers to contend with glass lasers.
Femtosecond laser dependant on Yb:KYW crystals with suppression of spectral narrowing within a regenerative amplifier by spectral profiling of the heart beat
FIG. 4. Autocorrelation perform of the heartbeat 共a兲and spectrum 共b兲of the laser with a rectangular Lively factor for an output electric power of 700 mW. The width of
By substituting yttrium with ytterbium inside the crystal lattice of Yb:KYW due to similar sizes of such chemical elements as much as 100% of Yb-doping could possibly be reached. This exceptional attribute permits ytterbium to take the spot of yttrium with nearly no disruption for the crystal’s lattice.
Following air drying and subsequent cleansing having a cotton fabric soaked in Liquor, the movie surface showed no signs of peeling or scratches.
PDF Yb:KGW and Yb:KYW crystals have wide emission bandwidths and therefore are employed as lasing resources to create ultrashort (~ 100-two hundred fs) large energy pulses. Immediate pump of Yb:KGW/KYW crystals with laser diodes running at 981 nm supports compact laser techniques.
Tungstates are inclined to own superior Raman coefficients (�?Raman scattering). Consequently, they could crank out significant Raman acquire at moderate optical intensities. It is feasible to make use of the laser crystal itself being a Raman converter.
For tungstates, the ytterbium doping concentration can be quite superior with no sizeable quenching because the replaced ions have an exceptionally comparable ion radius, along with the inter-ion length is pretty large.
High-power repetitively pulsed ytterbium lasers with supershort pulse width and direct diode pumping for technological and biomedical purposes
Whilst ytterbium-doped laser get media commonly show a small quantum defect, ytterbium-doped tungstates enable for significantly compact values. One example is, a 1030-nm Yb:YAG laser would Generally be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW could be most competently pumped all over 981 nm.
This tandem of attributes has considerably-reaching implications, especially in the development of compact but powerfull lasers.
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At the same time, a KYW Crystal shorter laser wavelength is usually acquired; it is possible to function using a quantum defect well underneath 1%. For a consequence, the heat era is usually so modest that this partly compensates the lower thermal conductivity.