| 研究生: |
王智明 She-Ming Wang |
|---|---|
| 論文名稱: |
不同溫度及波長之摻銠鈦酸鋇單晶性質研究 |
| 指導教授: |
張正陽
Jenq-Yang Chang |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 光電科學與工程學系 Department of Optics and Photonics |
| 畢業學年度: | 88 |
| 語文別: | 中文 |
| 論文頁數: | 125 |
| 中文關鍵詞: | 光折變 、雙波混和 、光致吸收光譜 、鈦酸鋇 、黑暗衰減 、溫度 、波長 |
| 外文關鍵詞: | dark decay, barium titanate, light-induced absorption, two-beam coupling, photorefractive, temperature, wavelength |
| 相關次數: | 點閱:12 下載:0 |
| 分享至: |
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1. 實驗波長的不同會使得晶體的主要載子有所改變。
2. 氣氛處理10-5atm以及10-10atm這兩顆晶體處於電子電洞競爭的狀態。10-5atm這顆晶體的電子電洞競爭的平衡點應將出現在波長514nm與532nm之間,而10-10atm這顆晶體的電子電洞競爭的平衡點應將出現在波長532nm與633nm之間。
3. 藉由分析材料的深淺能階所佔的比重,我們可以預測有效陷阱濃度與溫度的關係:淺能階效應大者,有效陷阱濃度隨溫度增高而減少;淺能階效應小者,有效陷阱濃度隨溫度增高而變大。
4. 溫度升高,黑暗導電率變大,導電率在高溫時會受黑暗導電率的主宰,而532nm及633nm的導電率主宰機制大致相同。
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