论文标题
跟踪活跃介质中的纳米级扰动
Tracking nanoscale perturbation in active disordered media
论文作者
论文摘要
该疾病引起的反馈使随机激光器非常容易受到散射介质中任何变化的影响。激光模式对无序系统扰动的敏感性已用于映射扰动区域。已定义了一个跟踪参数，该跟踪参数已定义为定义系统的光线模式的空间分布的累积效应，以定位散射器被几个纳米移位的区域。我们从数值上表明该方法的精度随模式数量而增加。所提出的方法开辟了将随机激光器作为监测纳米级位移位置的工具的可能性，该工具可用于单个粒子检测和监测。
The disorder induced feedback makes random lasers very susceptible to any changes in the scattering medium. The sensitivity of the lasing modes to perturbations in the disordered systems have been utilized to map the regions of perturbation. A tracking parameter, that takes into account the cumulative effect of changes in the spatial distribution of the lasing modes of the system has been defined to locate the region in which a scatterer is displaced by a few nanometers. We show numerically that the precision of the method increases with the number of modes. The proposed method opens up the possibility of application of random lasers as a tool for monitoring locations of nanoscale displacement which can be useful for single particle detection and monitoring.
