论文标题
由非共振环形泵送产生的激子极化涡流的形成动力学
Formation dynamics of exciton polariton vortices created by non-resonant annular pumping
论文作者
论文摘要
我们研究了在全光激发的环形陷阱中激发式旋律的自发形成，该曲线是由环形亚匹秒激光脉冲形成的。由于这些涡流发出的光带有与其拓扑电荷相对应的轨道角动量（OAM），因此我们应用专用的OAM光谱技术来检测以Picsecond Time分辨率的测量信号的OAM。这使我们能够识别OAM模式的形成并研究涡流形成过程的动力学。我们还研究了此过程的功率依赖性以及环直径如何影响OAM模式的形成。
We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.
