论文标题
量子级联激光器中的相干多模式动力学：振幅和频率调节的光频梳
Coherent multi-mode dynamics in a Quantum Cascade Laser: Amplitude and Frequency-modulated Optical Frequency Combs
论文作者
论文摘要
我们施放了一个基于有效半导体麦克斯韦方程的理论模型，并研究了Fabry Perot中多模式中红外量子级联激光的动力学，目的是研究光频率梳子的自发产生。该模型涵盖了半导体活动介质的关键特征，例如不对称，频率依赖性增益和折射率，以及线宽增强因子提供的场动力学的相位振幅耦合。我们的数值模拟与最新的实验结果非常吻合，显示了锁定锁定的锁定范围，当场模式解锁时，锁定的锁定状态锁定的锁定状态均与混乱的动力学分开。在前一种情况下，我们确定沿着腔体传播的自限制结构，而瞬时频率的特征是线性chir行为。在这样的方案中，我们表明OFC的特征是伴随和相关的幅度和频率调制。
We cast a theoretical model based on Effective Semiconductor Maxwell-Bloch Equations and study the dynamics of a multi-mode mid-Infrared Quantum Cascade Laser in Fabry Perot with the aim to investigate the spontaneous generation of optical frequency combs. This model encompasses the key features of a semiconductor active medium such as asymmetric,frequency-dependent gain and refractive index as well as the phase-amplitude coupling of the field dynamics provided by the linewidth enhancement factor. Our numerical simulations are in excellent agreement with recent experimental results, showing broad ranges of comb formationin locked regimes, separated by chaotic dynamics when the field modes unlock. In the former case, we identify self-confined structures travelling along the cavity, while the instantaneous frequency is characterized by a linear chirp behaviour. In such regimes we show that OFC are characterized by concomitant and relevant amplitude and frequency modulation.
