講演抄録/キーワード |
講演名 |
2017-12-19 14:45
Simulation on the optical gain of GaN-based THz-QCLs ○Yun Joosun・Wang Ke・Hideki Hirayama(RIKEN) ED2017-90 エレソ技報アーカイブへのリンク:ED2017-90 |
抄録 |
(和) |
We investigated GaN-based THz quantum cascade laser (THz-QCL) by utilizing self-consistent non-equilibrium Green’s function method (SC-NEGF) considering level broadening. Since severe level broadening by strong phonon-electron interaction is a major problem disturbing to obtain enough gain for lasing in GaN-based QCLs, we designed an example band structure which can circumvent the interference by the level broadening. The designed structure consists of double quantum well structure with AlGaN/GaN/AlGaN/GaN material system. Analysis results showed high average optical gain over 100 cm-1 at room temperature from 8.6 to 13.1 THz with the designed band structure. |
(英) |
We investigated GaN-based THz quantum cascade laser (THz-QCL) by utilizing self-consistent non-equilibrium Green’s function method (SC-NEGF) considering level broadening. Since severe level broadening by strong phonon-electron interaction is a major problem disturbing to obtain enough gain for lasing in GaN-based QCLs, we designed an example band structure which can circumvent the interference by the level broadening. The designed structure consists of double quantum well structure with AlGaN/GaN/AlGaN/GaN material system. Analysis results showed high average optical gain over 100 cm-1 at room temperature from 8.6 to 13.1 THz with the designed band structure. |
キーワード |
(和) |
/ / / / / / / |
(英) |
QCL / NEGF / GaN / AlGaN / / / / |
文献情報 |
信学技報, vol. 117, no. 364, ED2017-90, pp. 69-72, 2017年12月. |
資料番号 |
ED2017-90 |
発行日 |
2017-12-11 (ED) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
ED2017-90 エレソ技報アーカイブへのリンク:ED2017-90 |