The unique combination of physical-chemical properties of the vanadate crystals makes them promising hosts for active elements of diode-pumped high-efficient CW, Q-switched and mode-locked lasers. The particular advantages of these materials are high thermal conductivity, chemical stability, low lasing threshold, and high lasing efficiency. The stimulated emission cross section of Nd³⁺ is much larger than that of YAG:Nd crystal.

Disordered calcium vanadates with trigonal structure are attractive materials for non linear optics because of efficient second harmonic generation [1]. Moreover disordered calcium vanadates are promising hosts for diode pumping lasers. The Ca₁₀Li(VO₄)₇ vanadate was chosen for investigations of crystal growth and laser application abilities.

A solid state synthesis was carried out to produce Ca₁₀Li(VO₄)₇ compound. For the growth process, an automatic “Analog” puller equipped with a weight control system was used. Cylindrical crystals of diameter up to 25 mm and length up to 50 mm were grown from a [001] oriented seed by the Czochralski technique. The pure crystals were of yellow colour, whereas Nd doped crystals were lilac.

The crystal structure of Ca₁₀Li(VO₄)₇ single crystal was determined by the powder diffraction method. Defect structure of crystal was studied with the use of both, high-resolution diffraction using a laboratory instrument and X-ray topographic techniques employing synchrotron radiation at the Hasylab laboratory (Hamburg).

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