论文标题
Terahertz量子级联激光器的多模式动力学：自发和积极诱导的致密和谐波相干性态度
Multi-mode Dynamics of Terahertz Quantum Cascade Lasers: spontaneous and actively induced generation of dense and harmonic coherent regimes
论文作者
论文摘要
我们提出了一项有关在Terahertz（THZ）光谱区域发出的Fabry-perot（FP）构型中量子级联激光器（QCLS）中致密和谐波相干方向的动力学的扩展研究。首先，我们研究了该设备在自由运行操作中，重现了该光谱范围内光频率梳子（OFC）和谐波频率梳子（HFC）的自我生成的主要特征，并评论了与中边缘区域的差异点，并与最新的实验确定性相吻合。然后，我们分析了射频注射（RF）下的THZ-QCL动力学，重点是调制电流对系统锁定程度的影响，并且我们进行了系统的研究，旨在为脉冲的产生提供较短的持续时间和高度对比度的脉冲训练。此外，我们将研究扩展到具有重复频率的脉冲序列的产生，这是激光腔的自由光谱范围（FSR）的倍数，重现了激光器的谐波模式锁定（HML），该方法最近在与THZ-QCL的实验中进行了较大的综述，并且在THZ-QCL的实验中进行了综合，并有效地进行了综合效果，并构成了该结果的综合效果。成像。
We present an extended study concerning the dynamics of dense and harmonic coherent regimes in quantum cascade lasers (QCLs) in a Fabry--Perot (FP) configuration emitting in the terahertz (THz) spectral region. Firstly, we study the device in free running operation, reproducing the main features of the self-generated of optical frequency combs (OFCs) and harmonic frequency combs (HFCs) in this spectral range, commenting on the points of difference from the mid-infrared region, and finding excellent agreement with the most recent experimental evidences. Then, we analyze the THz-QCL dynamics under radiofrequency (RF) injection, with a focus on the effect of the modulation of the current on the degree of locking of the system, and we perform a systematic investigation aimed to provide a procedure for the generation of train of pulses with short duration and high contrast. Furthermore, we extend our study to the generation of sequences of pulses with repetition frequency which is a multiple of the free-spectral range (FSR) of the laser cavity, reproducing harmonic mode-locking (HML) of the laser, a method which has been recently demontrated in experiments with THz-QCLs, and the results of which are particulary promising for a large stream of applications, ranging from optical communication to imaging.
