Considerations To Know About KYW Crystal

Considerations To Know About KYW Crystal

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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, as compared to its counterpart Yb:KGW, is really a exceptional material that plays an essential part in laser technology. Its Major function would be to produce ultrashort pulses of sunshine, spanning just some hundred femtoseconds.

Femtosecond laser according to Yb:KYW crystals with suppression of spectral narrowing in the regenerative amplifier by spectral profiling of the heart beat

FIG. 4. Autocorrelation function of the pulse 共a兲and spectrum 共b兲of the laser with a rectangular Energetic ingredient for an output energy of seven-hundred mW. The width of

This paper describes a femtosecond laser regenerative amplifier based on two Yb:KYW crystals with immediate longitudinal pumping by strong linear arrays of semiconductor injection lasers acquiring fiber output. To forestall spectral narrowing through amplification along with the corresponding lengthening in the amplified pulse when it's compressed, a mix of two Yb:KYW crystals have been utilized, with the spectral maxima with the amplification shifted relative to each other and with spectral profiling in the amplified radiation.

Right before the development of Nd:YAG, Nd3+:CaWO4 was an important scarce-earth-doped laser obtain medium. It absolutely was in fact Utilized in the main constantly running crystal laser.

FIG. one. Optical layout of the laser with direct pumping While using the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output

Tungstates are likely to possess substantial Raman coefficients (�?Raman scattering). Hence, they are able to create important Raman achieve at reasonable optical intensities. It is achievable to make use of the laser crystal by itself like a Raman converter.

For tungstates, the ytterbium doping concentration can be extremely higher without the need of considerable quenching as the changed ions have an extremely identical ion radius, as well as the inter-ion length is fairly significant.

By substituting yttrium with ytterbium during the crystal lattice of Yb:KYW due to the equivalent sizes of such chemical things approximately 100% of Yb-doping could be obtained.

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Concurrently, a shorter laser wavelength might be acquired; it is possible to function using a quantum defect well down below 1%. To be a consequence, the heat technology might be so little that this partly compensates the lessen thermal conductivity.