Abstract
High optical quality single crystal fibers of β-BaB 2O 4 (BBO), an important new nonlinear optical material, were grown by the laser-heated pedestal growth (LHPG) method. Because the β-phase is the low temperature phase, these fiber crystals were grown from solution to avoid the α-β solid-state phase transformation encountered when crystals are grown directly from the melt. In this study Na 2O and B 2O 3 were found to be the most useful solvents. The effects of solution composition and seed orientation on fiber growth rate and quality were investigated. Inclusions were observed in some fibers and the relationship between the formation of inclusions and supercooling at the growth interface is discussed.
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