Fascination About KYW Crystal
Fascination About KYW Crystal
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The achieve bandwidth e.g. of Yb:KGW and Yb:KYW may be very substantial compared with that of Yb:YAG. This allows for broad wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values perfectly underneath a hundred fs happen to be reached with passive manner locking.
This special characteristic of ultrafast pulses permits nonlinear optical conversation with tissue at lower overall exposure, and drives applications such as deep-tissue multiphoton microscopy and significant-precision eye surgery
The Yb:KYW crystal’s proficiency in gentle absorption at all-around 981 nm makes the crystal well matched for diode pumping. It's more Increased by its amazing effectiveness in this process, coupled with its minimal quantum defect.
Colour-coded reflectivity of the Bragg mirror as being a perform of wavelength and angle in the incident beam.
By substituting yttrium with ytterbium within the crystal lattice of Yb:KYW as a result of similar measurements of those chemical components up to one hundred% of Yb-doping may very well be achieved. This distinctive attribute permits ytterbium to take the put of yttrium with almost no disruption on the crystal’s lattice.
Ahead of the development of Nd:YAG, Nd3+:CaWO4 was a very important rare-earth-doped laser gain medium. It was in reality used in the first constantly functioning crystal laser.
Raman, luminescence and transmission spectra expose optical capabilities owing towards the existence of thulium ions, and therefore the components may be even further examined while in the scope of laser and luminescence programs.
Tungstates tend to obtain superior Raman coefficients (�?Raman scattering). Therefore, they will deliver sizeable Raman obtain at moderate optical intensities. It is feasible to make use of the laser crystal by itself for a Raman converter.
For tungstates, the ytterbium doping concentration can be very large without the need of sizeable quenching because the changed ions have a very comparable ion radius, along with the inter-ion distance is relatively big.
By substituting yttrium with ytterbium while in the crystal lattice of Yb:KYW because of the related sizes of these chemical features as much as 100% of Yb-doping could be obtained.
Whilst ytterbium-doped laser achieve media frequently show a small quantum defect, ytterbium-doped tungstates allow for for especially small values. As an example, a 1030-nm Yb:YAG laser would Typically be pumped all-around 940 nm, While Yb:KGW or Yb:KYW may be most successfully pumped about 981 nm.
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The polarized absorption spectra of Tm3+-doped potassium yttrium tungstate (Tm:KY(WO4)two) crystal at area temperature were calculated. The emission spectrum and life time from the three F four thrilled condition more info were established. Using typical and modified Judd–Ofelt theories, the intensity parameters plus the radiative lifetimes were calculated and great arrangement While using the experimental final results was attained for each theories.
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