Excitonic optical absorption in semiconductors under intense terahertz radiation
文献类型：期刊论文
| 作者 | Zhang Tong-Yi; Zhao Wei |
| 刊名 | chinese physics b
 |
| 出版日期 | 2008-11-01 |
| 卷号 | 17期号:11页码:4285-4291 |
| 关键词 | exciton optical absorption terahertz radiation dynamical Franz-Keldysh effect |
| ISSN号 | 1674-1056 |
| 合作状况 | 其它 |
| 英文摘要 | the excitonic optical absorption of gaas bulk semiconductors under intense terahertz (thz) radiation is investigated numerically. the method of solving initial-value problems, combined with the perfect matched layer technique, is used to calculate the optical susceptibility. in the presence of a driving thz field, in addition to the usual exciton peaks, 2p replica of the dark 2p exciton and even-thz-photon-sidebands of the main exciton resonance emerge in the continuum above the band edge and below the main exciton resonance. moreover, to understand the shift of the position of the main exciton peak under intense thz radiation, it is necessary to take into consideration both the dynamical franz-keldysh effect and ac stark effect simultaneously. for moderate frequency fields, the main exciton peak decreases and broadens due to the field-induced ionization of the excitons with thz field increasing. however, for high frequency thz fields, the characteristics of the exciton recur even under very strong thz fields, which accords with the recent experimental results qualitatively. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 数理科学和化学 |
| 类目[WOS] | physics, multidisciplinary |
| 研究领域[WOS] | physics |
| 关键词[WOS] | quantum-well structures ; numerical-calculation ; magnetic-field ; electric-field ; band-gap ; electroabsorption ; magnetoexcitons ; edge |
| 收录类别 | SCI ; EI |
| 资助信息 | ∗project supported by the national natural science foundation of china (grant no 60777017), the national basic research |
| 语种 | 英语 |
| WOS记录号 | WOS:000261206700054 |
| 公开日期 | 2010-01-13 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/7975]  |
| 专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
| 作者单位 | Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Tong-Yi,Zhao Wei. Excitonic optical absorption in semiconductors under intense terahertz radiation[J]. chinese physics b,2008,17(11):4285-4291. |
| APA | Zhang Tong-Yi,&Zhao Wei.(2008).Excitonic optical absorption in semiconductors under intense terahertz radiation.chinese physics b,17(11),4285-4291. |
| MLA | Zhang Tong-Yi,et al."Excitonic optical absorption in semiconductors under intense terahertz radiation".chinese physics b 17.11(2008):4285-4291. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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