Paper
20 September 2005 Minimization of the surface non-uniformity of a Nd:YVO4 cylindrical bar grown by edge-defined film-fed growth (EFG) system in low-gravity environment
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Abstract
In this paper the dependence of the radius of a Nd:YVO4 cylindrical bar, grown in a low-gravity environment, on the pulling rate (v), melt temperature (T0) at the meniscus basis, pressure in the furnace (p) and die radius (r0e) is found. Those values of v, T0, p and r0e are determined for which the crystal radius variation, due to small uncontrollable variations of v, T0, p around some average values, cause minimal surface non-uniformity. Numerical results are given for a Nd:YVO4 cylindrical bar grown in a furnace in which the vertical temperature gradient is k=33 K/mm. Finally, the results obtained in low-gravity environment are compared to those obtained in terrestrial conditions.
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Liliana Braescu, Agneta M. Balint, Robert Szabo, and Stefan Balint "Minimization of the surface non-uniformity of a Nd:YVO4 cylindrical bar grown by edge-defined film-fed growth (EFG) system in low-gravity environment", Proc. SPIE 5912, Operational Characteristics and Crystal Growth of Nonlinear Optical Materials II, 59120M (20 September 2005); https://doi.org/10.1117/12.613894
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KEYWORDS
Crystals

Neodymium lasers

Nonlinear crystals

Laser crystals

Neodymium

Applied mathematics

Mathematical modeling

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