Top KYW Crystal Secrets
Top KYW Crystal Secrets
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The Yb-doped potassium yttrium tungstate (Yb:KYW) crystal, in comparison to its counterpart Yb:KGW, can be a amazing product that performs an essential function in laser know-how. Its Most important function is usually to crank out ultrashort pulses of light, spanning only a few hundred femtoseconds.
The Yb:KYW crystal’s proficiency in light-weight absorption at around 981 nm helps make the crystal compatible for diode pumping. It is additional Improved by its impressive performance in this method, coupled with its very low quantum defect.
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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 also the corresponding lengthening of your amplified pulse when it can be compressed, a combination of website two Yb:KYW crystals were utilised, With all the spectral maxima of the amplification shifted relative to one another and with spectral profiling from the amplified radiation.
Prior to the event of Nd:YAG, Nd3+:CaWO4 was a vital uncommon-earth-doped laser achieve medium. It was the truth is Employed in the initial repeatedly functioning crystal laser.
FIG. one. Optical layout of the laser with direct pumping with the radiation of semiconductor injection lasers. LD is really an IPG Photonics laser diode with fiber output
Tungstates have a tendency to own significant Raman coefficients (�?Raman scattering). Thus, they are able to create important Raman achieve at reasonable optical intensities. It is achievable to make use of the laser crystal itself like a Raman converter.
For tungstates, the ytterbium doping concentration can be quite large without considerable quenching as the changed ions have an extremely very similar ion radius, and the inter-ion distance is comparatively substantial.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW as a result of similar measurements of such chemical components as much as a hundred% of Yb-doping may be achieved.
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Li2WO4-WO3 flux was productively used decreasing the growth temperature underneath 900 oC. According to single crystal x-ray measurements, the crystal corresponds for the P2/n Place team.
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At the same time, a shorter laser wavelength can be received; it is possible to work using a quantum defect nicely beneath one%. Like a consequence, the warmth era can be so modest this partly compensates the decrease thermal conductivity.