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Materiały Optyczne i Optomechaniczne

Filtry, Lasery, Pryzmaty, Soczewki, Stoły Optyczne

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GaAs, GaSb, InP, InSb, InAs
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Kryształy laserowe > Kryształ Yb:CaF2

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Due to Yb:CaF2 crystal low quantum defect and a comparably long fluorescence lifetime, ytter-bium-doped gain media are preferably utilized for high-power diode-pumped systems and laser amplifiers with high optical-to-optical conversion efficiencies. From this point of view, Yb:YAG is now the most important and developed one. Just recently, ytterbium-doped alkaline-earth fluori-des (Yb:CaF2) have attracted considerable interest for use in diode-pumped femtosecond (fs) la-sers and amplifiers.

Alkaline-earth fluorides which can be easily grown by using the standard Czochralski or Bridgman technique show a wide optical transmission range, a low dispersion behavior and limited nonlinear effects under intense laser irradiation. It was recently shown that Yb:CaF2 single crystal can be grown up to diameters of about 200 mm, which is superior for high-energy short-pulse lasers with centimeter-sized apertures



Crystal structurecubic
Pointing groupm3m
Lattice parametersa = 5.462 Å
Thermal expansion18 × 10-6 / °C
Thermal conductivity9.7 W/mK
Density3.18 g/cm³
Mohs hardness4
Melting temperature1418 °C
Refractive indices (l=1,06mm)no = 1.4
dn/ dT-10.00 x 10-6 / °K

Yb:CaF2 Crystals


Crystal structurecubic
Pointing groupm3m
Lattice parametersa = 5.462 Å
Thermal expansion18 × 10-6 / °C
Thermal conductivity9.7 W/mK
Density3.18 g/cm³
Mohs hardness4
Melting temperature1418 °C
Refractive indices (l=1,06mm)no = 1.4
dn/ dT-10.00 x 10-6 / °K

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