| Giant Birefringence of Lithium Niobate Crystals in the Terahertz Region |
| |
| 引用本文： | 孙毅民 毛宗良 侯碧辉 刘国庆 汪力. Giant Birefringence of Lithium Niobate Crystals in the Terahertz Region[J]. 中国物理快报, 2007, 24(2): 414-417 |
| |
| 作者姓名： | 孙毅民 毛宗良 侯碧辉 刘国庆 汪力 |
| |
| 作者单位： | [1]Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 [2]College of Applied Science, Beijing University of Technology, Beijing 100022 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10390160. |
| |
| 摘 要： | Terahertz time-domaln spectroscopy （THz-TDS） is used to study the spectral response of lithium niobate crystals （LiNbO3） in the far infrared region. The optical constants are derived from the measured complex refractive index. A giant birefringence is observed in this material, and the average refractive-index difference between the ordinary wave and the extraordinary wave, no - ne, can reach up to about 1.6. Such a large birefrlngence is attributed to the different p honon modes orAl（z） and E （ x , y ）. This unusual property makes LiNbO3 a promising material to be used as a functional material in the terahertz region, e.g. employed as wave-plates and polarization separators.
|
| 关 键 词： | 锂铌酸 晶体 双折射 光谱学 |
| 收稿时间： | 2006-09-18 |
| 修稿时间： | 2006-09-18 |
Giant Birefringence of Lithium Niobate Crystals in the Terahertz Region |
| |
| SUN Yi-Min,MAO Zong-Liang,HOU Bi-Hui,LIU Guo-Qing,WANG Li. Giant Birefringence of Lithium Niobate Crystals in the Terahertz Region[J]. Chinese Physics Letters, 2007, 24(2): 414-417 |
| |
| Authors: | SUN Yi-Min MAO Zong-Liang HOU Bi-Hui LIU Guo-Qing WANG Li |
| |
| Affiliation: | 1 Laboratory of Optical Physics, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 2 College of Applied Science, Beijing University of Technology, Beijing 100022 |
| |
| Abstract: | Terahertz time-domain spectroscopy (THz-TDS) is used to study the spectral response of lithium niobate crystals (LiNbO3) in the far infrared region. The optical constants are derived from the measured complex refractive index. A giant birefringence is observed in this material, and the average refractive-index difference between the ordinary wave and the extraordinary wave, no-ne, can reach up to about 1.6. Such a large birefringence is attributed to the different phonon modes of A1(z) and E(x,y). This unusual property makes LiNbO3 a promising material to be used as a functional material in the terahertz region, e.g. employed as wave-plates and polarization separators. |
| |
| Keywords: | 42.25.Bs 42.25.Lc 78.20.Fm |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
|
点击此处可从《中国物理快报》下载免费的PDF全文 |
|
