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| Ce∶Mn∶LiNbO3晶体紫外记录研究 | |
| 引用本文： | 柴志方,刘德安,戴翠霞,栾竹,刘立人. Ce∶Mn∶LiNbO3晶体紫外记录研究[J]. 中国激光, 2005, 32(8): 1132-1136 |
| 作者姓名： | 柴志方 刘德安 戴翠霞 栾竹 刘立人 |
| 作者单位： | 柴志方:中国科学院上海光学精密机械研究所,上海 201800 刘德安:中国科学院上海光学精密机械研究所,上海 201800 戴翠霞:中国科学院上海光学精密机械研究所,上海 201800 栾竹:中国科学院上海光学精密机械研究所,上海 201800 刘立人:中国科学院上海光学精密机械研究所,上海 201800 |
| 基金项目： | 科技部重大基础研究前期研究专项(2002CCA03500)及国家自然科学基金(60177016)资助项目。 |
| 摘 要： | 采用紫外光作记录光在Ce∶Mn∶LiNbO3晶体中实现非挥发全息记录,灵敏度可达0.0803 cm/J,衍射效率(固定)为5.07%,比采用红光为记录光,紫外光为敏化光的非挥发双中心记录方案均提高了50多倍。分析表明,采用紫外光作为记录光,深能级电子被激发比例极大提高,参与光折变过程的电子平均运动周期变短,提高了衍射效率和灵敏度;深浅能级电子光栅的同相位,使得固定空间电荷场变强。文中还研究了退火对记录性能的影响。 |
| 关 键 词： | 全息 非挥发全息记录 紫外记录 Ce∶Mn∶LiNbO3晶体 |
| 收稿时间： | 2004-09-23 |
Study of UV Recording in Congruent Ce∶Mn∶LiNbO3 |
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| Abstract: | Nonvolatile holographic recording is performed with recording UV beams (364 nm) in Ce∶Mn∶LiNbO3 crystals, both the sensitivity and the fixed diffraction efficiency can be improved more than 50 times of that in two-center recording scheme with recording red beams (633 nm). It is analyzed that in this UV recording system, a larger proportion of the electrons are excited and the average movement cycle of electrons involved in photorefrative procedure becomes shorter; the deep and shallow center being in phase makes the fixed space-charge field stronger. The effect of annealing also is studied. |
| Keywords: | holography nonvolatile holographic recording UV recording Ce∶Mn∶LiNbO3 crystals |