頁籤選單縮合
題名 | 頂晶熔鹽法生長鈦酸鉍晶體及其特性研究 |
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作者 | 葉東昇; 胡榮章; 杜順利; 楊聲震; 許樹恩; | 書刊名 | 材料科學 |
卷期 | 26:1 1994.03[民83.03] |
頁次 | 頁77-80 |
分類號 | 349.3 |
關鍵詞 | 頂晶熔鹽法; 鈦酸鉍晶體; 光折變性質; Bi[feba]TiO佂; Top-seeded solution growth; Photorefractive properties; |
語文 | 中文(Chinese) |
中文摘要 | 本實驗成功地發展出Bi�摭iO��(BTO)晶體的頂晶熔鹽法(Top-Seeded Solution Growth,TSSG)單晶生長技術,在Bi�烙��:TiO��=9:1的溶液成份中,以 0.25~0.35mm/hr長晶速度育得直徑15~18mm、長3cm品質良好的BTO晶體。BTO晶 體的旋光性隨使用波長之增加而減弱,由488nm時的13.5°/mm降至633nm時的6 °/mm。BTO晶體的光折變反應時間常數隨入射光夾角增加而變大,繞射效率n 則在夾角2θ=60°時有最大值,光折變有效陷阱濃度NA=7.9X10�騁壢m�笐纂C |
英文摘要 | Bi�摭iO�� (BTO) crystals have been grown by top-seeded solution growth (TSSG) method inBi�烙�� and TiO�� (9 to 1 molar ratio) solution. The pulling rates are between 0.25mm/h and 0.35mm/h.The crystal boules are 15~18mm in diameter and 30mm in length. The optical activity of BTO crystalsdecreases from 13.5°/mm to 6°/mm as optical wavelength increases from 488nm to 633nm. The photorefractive decay time constant increases as the angle (2θ) between two incident beams increases. The diffraction efficiency has the largest value at 2θ = 60° and the calculated effective trap density is |
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