基于双上能级-对角跃迁设计的甚长波量子级联激光器

Key Points

• The aim is to report on a quantum cascade laser designed for long-wave applications, focusing on output power and tuning capabilities.
• Developed a quantum cascade laser using dual upper-level diagonal transitions with lattice-matched materials.
• Investigated the tuning mechanism based on external cavity structures.
• Analyzed performance in pulse operation mode.
• Achieved a peak power of 1.5 W and average power of 90 mW under pulse operation.
• Demonstrated continuous tuning output between 13.18 µm and 14.03 µm with a maximum average power of 3.43 mW in this range.
• Indicated significant application potential in multi-component gas sensing in the long-wave infrared range.