Design of surface emitting distributed feedback quantum cascade laser with single-lobe far-field pattern and high outcoupling efficiency
文献类型：期刊论文
| 作者 | Guo Wan-Hong; Liu Jun-Qi; Lu Quan-Yong; Zhang Wei; Li Lu; Wang Li-Jun; Liu Feng-Qi; Wang Zhan-Guo |
| 刊名 | Chinese physics b
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 19期号:5页码:7 |
| 关键词 | Quantum cascade laser Floquet-bloch expansion Distributed feedback lasers Surface emission |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/19/5/054208 |
| 通讯作者 | Guo wan-hong(whguo@semi.ac.cn) |
| 英文摘要 | A 7.8-mu m surface emitting second-order distributed feedback quantum cascade laser (dfb qcl) structure with metallized surface grating is studied. the modal property of this structure is described by utilizing coupled-mode theory where the coupling coefficients are derived from exact floquet-bloch solutions of infinite periodic structure. based on this theory, the influence of waveguide structure and grating topography as well as device length on the laser performance is numerically investigated. the optimized surface emitting second-order dfb qcl structure design exhibits a high surface outcoupling efficiency of 22% and a low threshold gain of 10 cm(-1). using a pi phase-shift in the centre of the grating, a high-quality single-lobe far-field radiation pattern is obtained. |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000277372200046 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428060 |
| 专题 | 半导体研究所 |
| 通讯作者 | Guo Wan-Hong |
| 作者单位 | Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo Wan-Hong,Liu Jun-Qi,Lu Quan-Yong,et al. Design of surface emitting distributed feedback quantum cascade laser with single-lobe far-field pattern and high outcoupling efficiency[J]. Chinese physics b,2010,19(5):7. |
| APA | Guo Wan-Hong.,Liu Jun-Qi.,Lu Quan-Yong.,Zhang Wei.,Li Lu.,...&Wang Zhan-Guo.(2010).Design of surface emitting distributed feedback quantum cascade laser with single-lobe far-field pattern and high outcoupling efficiency.Chinese physics b,19(5),7. |
| MLA | Guo Wan-Hong,et al."Design of surface emitting distributed feedback quantum cascade laser with single-lobe far-field pattern and high outcoupling efficiency".Chinese physics b 19.5(2010):7. |
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来源：半导体研究所
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