Finger capacitance of a terahertz photomixer in low-temperature-grown GaAs using the finite element method
文献类型：期刊论文
| 作者 | Chen Long-Chao; Fan Wen-Hui
|
| 刊名 | chinese physics b
 |
| 出版日期 | 2012-10-01 |
| 卷号 | 21期号:10页码:104101 |
| 关键词 | terahertz photomixer continuous-wave interditated finger capacitance finite element method |
| ISSN号 | 1674-1056 |
| 产权排序 | 1 |
| 合作状况 | 国内 |
| 英文摘要 | interdigitated finger capacitance of a continuous-wave terahertz photomixer is calculated using the finite element method. for the frequently used electrode width (0.2 mu m) and gap width (1.8 mu m), the finger capacitance increases quasi-quadratically with the number of electrodes increasing. the quasi-quadratic dependence can be explained by a sequence of lumped capacitors connected in parallel. for a photomixer composed of 10 electrodes and 9 photoconductive gaps, the finger capacitance increases as the gap width increases at a small electrode width, and follows the reverse trend at a large electrode width. for a constant electrode width, the finger capacitance first decreases and then slightly increases as the gap broadens until the smallest finger capacitance is formed. we also investigate the finger capacitances at different electrode and gap configurations with the 8 mu m x 8 mu m photomixer commonly used in previous studies. these calculations lead to a better understanding of the finger capacitance affected by the finger parameters, and should lead to terahertz photomixer optimization. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | physics, multidisciplinary |
| 研究领域[WOS] | physics |
| 关键词[WOS] | continuous-wave terahertz ; diode-lasers |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000309817400036 |
| 公开日期 | 2012-12-12 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/20440]  |
| 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 | Chen Long-Chao,Fan Wen-Hui. Finger capacitance of a terahertz photomixer in low-temperature-grown GaAs using the finite element method[J]. chinese physics b,2012,21(10):104101. |
| APA | Chen Long-Chao,&Fan Wen-Hui.(2012).Finger capacitance of a terahertz photomixer in low-temperature-grown GaAs using the finite element method.chinese physics b,21(10),104101. |
| MLA | Chen Long-Chao,et al."Finger capacitance of a terahertz photomixer in low-temperature-grown GaAs using the finite element method".chinese physics b 21.10(2012):104101. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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