Getting My KYW Crystal To Work

Getting My KYW Crystal To Work

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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is really a outstanding substance that performs a crucial purpose in laser technological know-how. Its Most important functionality should be to deliver ultrashort pulses of sunshine, spanning just some hundred femtoseconds.

The Yb:KYW crystal’s proficiency in mild absorption at close to 981 nm helps make the crystal well suited for diode pumping. It is actually further more Increased by its outstanding effectiveness in this process, coupled with its low quantum defect.

FIG. 4. Autocorrelation functionality of the pulse 共a兲and spectrum 共b兲of a laser with a rectangular active factor for an output electric power of seven-hundred mW. The width of

This paper describes a femtosecond laser regenerative amplifier dependant 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 of your amplified pulse when it truly is compressed, a combination of two Yb:KYW crystals were being utilised, Using the spectral maxima on the amplification shifted relative to each other and with spectral profiling on the amplified radiation.

Adhesion Check Compliant with MIL-C-675C armed service standards, an adhesion check concerned applying a tape that meets LT-90 specifications onto the lens movie layer. The tape was affixed fully and after that eliminated vertically. This technique was performed 3 times, leading to no blistering or peeling.

Raman, luminescence and transmission spectra reveal optical characteristics owing to your existence of thulium ions, and so the products could be further studied in the scope of laser and luminescence purposes.

Spatial framework of the beam and also the corresponding depth profiles I with the output of the laser.

For tungstates, the ytterbium doping focus can be KYW Crystal very significant without substantial quenching since the replaced ions have an incredibly equivalent ion radius, along with the inter-ion length is pretty big.

By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW because of the similar dimensions of those chemical aspects around a hundred% of Yb-doping may be obtained.

Whilst ytterbium-doped laser acquire media typically exhibit a small quantum defect, ytterbium-doped tungstates permit for specifically tiny values. By way of example, a 1030-nm Yb:YAG laser would Generally be pumped close to 940 nm, whereas Yb:KGW or Yb:KYW could be most efficiently pumped all-around 981 nm.

This tandem of attributes has significantly-achieving implications, especially in the construction of compact still powerfull lasers.

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Simultaneously, a shorter laser wavelength can be received; it can be done to function with a quantum defect very well beneath one%. As being a consequence, the warmth technology might be so small that this partly compensates the lessen thermal conductivity.