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題 名 | Temperature Dependence of Uolume Gratings in Photorefractive Barium Titanate=光折鈦酸鋇晶體中立體光柵之溫度效應研究 |
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作 者 | 楊天行; | 書刊名 | 海軍軍官學校學報 |
卷 期 | 3 1993.12[民82.12] |
頁 次 | 頁7-14 |
分類號 | 336.4 |
關鍵詞 | 中立體; 光折; 光柵; 溫度效應; 鈦酸鋇晶體; |
語 文 | 英文(English) |
中文摘要 | 溫度因素在光折物質之標準理論中並沒有清楚的表示,對於溫度效應之物理模型 亦不了解,為了更清楚明白此溫度效應在光折鈦酸鋇中之物理模型,我們做了一些溫度效應 之實驗量測。我們變化晶體溫度從室溫到攝氏一百度,觀察晶體之四束混合和自發相位共軛 現象之反應時間和繞射效率之變化,我們討論這些結果及其物理模型,並考慮全息訊號固定 的可能性。 |
英文摘要 | It has been reported that the relatively slow response time of photorefractive Barium Titanate can be improved by increasing the temperature of the crystal, and that some degree of hologram fixing may be possible. In trying to better understand the temperature dependence theoretically and experimentally, we have made measurements of temperature dependenceies. These are based on nondegenerate four-wave mixing and self-pumped phase conjugation experiments, and changes in response times and decay times and diffraction efficiency, as a function of temperatures ranging from room temperature to about 100℃. These results are presented and discussed. A possible fixing method is also presented following these discussions. |
本系統中英文摘要資訊取自各篇刊載內容。