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Growth of $GdVO_4$ composite single-crystal rods by the double-die edge-defined film-fed growth technique  

Furukawa, Y. (Oxide Corporation, Mukawa, Hokuto)
Matsukura, M. (Oxide Corporation, Mukawa, Hokuto)
Nakamura, O. (Oxide Corporation, Mukawa, Hokuto)
Miyamoto, A. (Oxide Corporation, Mukawa, Hokuto)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.18, no.1, 2008 , pp. 1-4 More about this Journal
Abstract
The growth of composite-structured Nd:$GdVO_4$ single crystal rods by the double die EFG method is reported. Two crucibles are combined with an outer and inner die for ascending of different melt. The composite-structured Nd:$GdVO_4$ single crystal rods with a length of 50 mm and an outer diameter of 5 mm including of inner Nd-doped core region with diameter 3 mm were grown successfully. Nd distribution in the, radial direction has graded profile from result of EPMA. Absorption coefficient in the core region at 808 nm was $42cm^{-1}$. Finally, we demonstrated the laser oscillation using our composite crystal and 2-W output was obtained.
Keywords
A2. Edge defined film fed growth; B1. Oxides; B1. Rare earth compounds;
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