Effects of temperature gradient on growth of SrB₄O₇ crystals by the micro-pulling-down method

• Inaba Sho

  Graduate School of Sciences and Technology for Innovation, Yamaguchi University

• Machida Takaaki

  Graduate School of Sciences and Technology for Innovation, Yamaguchi University

• Asakawa Harutoshi

  Graduate School of Sciences and Technology for Innovation, Yamaguchi University

• Komatsu Ryuichi

  Graduate School of Sciences and Technology for Innovation, Yamaguchi University

抄録

  SrB₄O₇ (SBO) shows superior transparency in the vacuum ultraviolet (UV) region, a high radiation damage threshold, and high nonlinearity, and SBO crystals have therefore attracted great interest as materials for low-cost, high-power UV light sources. To use SBO crystals as laser sources, it is essential to grow transparent SBO crystals. Here we show the effects of temperature gradient G on the growth of SBO crystals by the micro-pulling-down method. At low G, SBO crystal fibers were obtained. The density of striations and the size of voids also decreased with decreasing G. These results demonstrate that a low G is essential for growing completely transparent SBO crystal fibers. In addition, we considered the effects of G on the oscillatory growth of SBO crystals in relation to latent heat removal.

収録刊行物

• Transactions of the Materials Research Society of Japan

  Transactions of the Materials Research Society of Japan 42 (5), 123-126, 2017

  一般社団法人 日本MRS

キーワード

• Strontium tetraborate
• Micro-pulling-down method
• Crystal growth
• Striation
• Void

詳細情報

• CRID: 1390282680490936576
• NII論文ID: 130006110887
• DOI: 10.14723/tmrsj.42.123
• ISSN: 21881650
• ISSN: 13823469
• Web Site: https://www.jstage.jst.go.jp/article/tmrsj/42/5/42_123/_pdf
• 本文言語コード: en
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