| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for growing a single crystal by which the single crystal having excellent crystallinity, homogeneity in the interior, and accordingly excellent uniformity of optical characteristics is grown in improved yield. SOLUTION: This method for growing single crystal ofβ-type barium borate (β-BaB2 O4 ) comprises indirectly heating a crucible 6, and growingβ-BaB2 O4 single crystal 21 from a barium borate (BaB2 O4 ) molten liquid obtained by using no flux in the crucible by using aβ-BaB2 O4 seed crystal 9.
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