论文标题
具有量身定制的光束形状和极化的窃窃私语纳光器的逆设计
Inverse Design of Whispering-gallery Nanolasers with Tailored Beam Shape and Polarization
论文作者
论文摘要
控制激光源发出的光束的形状和极化在诸如光学通信，光学操纵和高分辨率光学成像等应用中很重要。在本文中，我们介绍了整体窃窃私语 - 纳米剂的逆设计，这些纳米剂沿着轴向方向散发出量身定制的激光束的形状和极化。我们设计并实验验证了三种类型的亚微米腔，每个腔体散发出不同的激光辐射模式：方位角极化的甜甜圈束，一个径向极化的甜甜圈束和线性极化的高斯样光束。测得的输出激光束相对于方位角，径向和线性极化的情况，相对于目标模式的92％，96％和85％的目标模式产生了磁场重叠，从而证明了具有量身定制梁的超紧凑型激光器设计方法的通用性。
Control over the shape and polarization of the beam emitted by a laser source is important in applications such as optical communications, optical manipulation and high-resolution optical imaging. In this paper, we present the inverse design of monolithic whispering-gallery nanolasers which emit along their axial direction with a tailored laser beam shape and polarization. We design and experimentally verify three types of sub-micron cavities, each one emitting into a different laser radiation mode: an azimuthally polarized doughnut beam, a radially polarized doughnut beam and a linearly polarized gaussian-like beam. The measured output laser beams yield a field overlap with respect to the target mode of 92%, 96% and 85% for the azimuthal, radial and linearly polarized cases, respectively, thereby demonstrating the generality of the method in the design of ultra-compact lasers with tailored beams.
