1 June 2005 Minimization of the surface non-uniformity of a Nd:YVO4 cylindrical bar grown by edge-defined film-fed growth (EFG) method, when the pressure in the furnace changes
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Abstract
In this paper the dependence of the crystal radius on the pulling rate (v), melt temperature (T0) at the meniscus basis, pressure in the furnace (p) and die radius (r0e) is found. This dependence is used to show in which kind the effect of the variation of one of these parameters can be compensated by varying an other one. Those values of v, T0, p and r0e are determined for which the crystal radius variations 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.
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Liliana Braescu, Agneta Maria Balint, Robert Szabo, Stefan Balint, "Minimization of the surface non-uniformity of a Nd:YVO4 cylindrical bar grown by edge-defined film-fed growth (EFG) method, when the pressure in the furnace changes", Proc. SPIE 5792, Laser Source and System Technology for Defense and Security, (1 June 2005); doi: 10.1117/12.602295; https://doi.org/10.1117/12.602295
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