講演抄録/キーワード |
講演名 |
2019-12-23 14:05
水平寄生電流リークを低減することにより高出力THz QCLの進展 ○林 宗澤・王 利(理研)・王 科(南京大)・平山秀樹(理研) ED2019-78 エレソ技報アーカイブへのリンク:ED2019-78 |
抄録 |
(和) |
Terahertz quantum cascade lasers (THz QCLs) are a promising high output semiconductor based THz sources with narrow bandwidth and wide operation frequency. Here we are theoretically analyzed THz QCLs based on the non-equilibrium Green’s function (NEGF) method to reduce long-term horizontal current leakage through high energy levels by optimize the structures with variable Al composition at extraction barrier. Simulations reveal a parasitic carrier leakage channel from upper laser level via the high energy state to the next period. By tuning the energy shift of these high energy levels with Al1-xGaxAs barriers and wells. THz QCL reducing the carrier population at such parasitic high energy levels and experimentally achieve a peak power of 450 mW. |
(英) |
Terahertz quantum cascade lasers (THz QCLs) are a promising high output semiconductor based THz sources with narrow bandwidth and wide operation frequency. Here we are theoretically analyzed THz QCLs based on the non-equilibrium Green’s function (NEGF) method to reduce long-term horizontal current leakage through high energy levels by optimize the structures with variable Al composition at extraction barrier. Simulations reveal a parasitic carrier leakage channel from upper laser level via the high energy state to the next period. By tuning the energy shift of these high energy levels with Al1-xGaxAs barriers and wells. THz QCL reducing the carrier population at such parasitic high energy levels and experimentally achieve a peak power of 450 mW. |
キーワード |
(和) |
テラヘルツ / 量子カスケードレーザー / / / / / / |
(英) |
THz / QCLs / / / / / / |
文献情報 |
信学技報, vol. 119, no. 353, ED2019-78, pp. 9-12, 2019年12月. |
資料番号 |
ED2019-78 |
発行日 |
2019-12-16 (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 |
ED2019-78 エレソ技報アーカイブへのリンク:ED2019-78 |