Development of GaN quantum cascade laser to cover the unexplored terahertz wave frequencies

• Project/Area Number: 24K00953
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21060:Electron device and electronic equipment-related
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: 王 利 国立研究開発法人理化学研究所, 光量子工学研究センター, 研究員 (50804035)
• Project Period (FY): 2024-04-01 – 2028-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2027: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2026: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2025: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2024: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
• Keywords: quantum cascade laser

Outline of Research at the Start

the main originality and novelty of this proposal is, to pioneering realize QCLs using III-nitrides QWs for this frequency gap. There is a scarcity of reports focused on QWs structures at QCL level. In additions, there has been a longstanding lack of a reliable model for comprehending quantum transport in QCLs, leading to a disconnect between experimental observations and theoretical calculations. Consequently, a feasible QCL design scheme has yet to be established. This proposal is to address these topics.