Near-infrared GaN quantum cascade laser for the next-generation self-driving car

用于下一代自动驾驶汽车的近红外GaN量子级联激光器

• 批准号: 21H01376
• 负责人: 王 利
• 金额: $ 9.9万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2025-03-31
• 项目状态: 未结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21H01376/
• 关键词: laser; GaN/AlGaN quantum wells; GaN QCLs; quantum cascade laser; terahertz; MBE epitaxy; semiconductor

1.the feasible QCLs design with improved robustness on strain relaxation is predicted by using nonequilibrium green’s function (NEGF) models. We update our models by including the strain relaxation parameters along the quantum wells epitaxy directions, and also the threading dislocation defects scattering is also developed to convince the prediction; 2. By growing um-thick GaN/AlGaN cascade quantum wells, we confirm the current-bias characteristic consistently with the calculation of NEGF models. We also observe the intersubband electroluminescence at targeted frequency. This results confidences the next step for laser; 3. The laser cavity structures processing has been ongoing.

1.采用非平衡格林函数（NEGF）模型预测了具有较强应变松弛鲁棒性的可行qcl设计。我们通过引入沿量子阱外延方向的应变松弛参数来更新我们的模型，并且还引入了螺纹位错缺陷散射来验证预测；2. 通过生长um厚GaN/AlGaN级联量子阱，我们证实了电流偏置特性与NEGF模型的计算结果一致。我们还观察了目标频率下的子带间电致发光。这一结果为激光的下一步发展奠定了基础；3. 激光腔体结构的加工一直在进行中。

项目成果

Engineering of electron and longitudinal optical phonon coupling strength in m-plane GaN terahertz quantum cascade lasers

m面GaN太赫兹量子级联激光器中电子和纵向光学声子耦合强度的工程

• DOI: 10.35848/1882-0786/ac2a02
• 发表时间: 2021
• 期刊: Applied Physics Express
• 影响因子: 2.3
• 作者: Wang Li;Lin Tsung-Tse;Chen Ming-Xi;Wang Ke;Hirayama Hideki
• 通讯作者: Hirayama Hideki

Limitation of parasitic absorption in designs of three-state terahertz quantum cascade lasers with direct-phonon injection

直接声子注入三态太赫兹量子级联激光器设计中寄生吸收的限制

• DOI: 10.35848/1882-0786/ac4e26
• 发表时间: 2022
• 期刊: Applied Physics Express
• 影响因子: 2.3
• 作者: Wang Li;Lin Tsung-Tse;Wang Ke;Hirayama Hideki
• 通讯作者: Hirayama Hideki

Isolated three-subbands system for high-temperature terahertz quantum cascade laser

高温太赫兹量子级联激光器的隔离三子带系统

• 发表时间: 2021
• 作者: Li Wang ;Tsung-Tse Lin ;Ming-xi Chen ;Ke Wang;Hideki Hirayama
• 通讯作者: Hideki Hirayama

Nonrelevant quantum levels limited laser dynamic in narrow-period terahertz quantum cascade lasers

不相关的量子能级限制了窄周期太赫兹量子级联激光器的激光动态

• DOI: 10.35848/1347-4065/ac8c0e
• 发表时间: 2022
• 期刊: Japanese Journal of Applied Physics
• 影响因子: 1.5
• 作者: Wang Li;Lin Tsung-Tse;Wang Ke;Hirayama Hideki
• 通讯作者: Hirayama Hideki

Consideration of the interface diffusions for narrow-period terahertz quantum cascade lasers

窄周期太赫兹量子级联激光器界面扩散的考虑

• 发表时间: 2022
• 作者: Li Wang