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量子级联激光器具备发射线宽窄,光功率密度高,单色性好与准直度高等特点。随着量子级联激光器技术的日趋成熟,其光谱范围不但覆盖大气透射的三个重要红外窗口,而且已经延伸至太赫兹频段,在化学和生物传感、成像和特殊通信等领域有重要的应用。本文首先从量子级联激光器基本结构和能级模型出发,通过构建量子力学模型实现对量子级联激光器物理特性的仿真,在此基础上引入了并行混沌遗传算法对量子级联激光器有源区设计结构中的关键参数进行了寻优。本文还测试并给出了并行计算的开销时间、加速比性能与收敛性。
Quantum cascade lasers with a narrow emission line, high optical power density, good monochromatic and high collimation. As the quantum cascade laser technology matures, its spectral range covers not only the three important infrared windows for atmospheric transmission, but also extends to the terahertz band, and has important applications in the fields of chemical and biological sensing, imaging and special communications . In this paper, based on the basic structure and energy level model of quantum cascade lasers, the quantum mechanical model is used to simulate the physical properties of quantum cascade lasers. Based on this, parallel chaos genetic algorithm is introduced to design the active region of quantum cascade lasers The key parameters in the structure are optimized. This paper also tests and presents the parallel computing overhead time, speedup performance and convergence.