Qiao Xingdu, Midya Bikashkali, Gao Zihe, Zhang Zhifeng, Zhao Haoqi, Wu Tianwei, Yim Jieun, Agarwal Ritesh, Litchinitser Natalia M, Feng Liang
Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
Science. 2021 Apr 23;372(6540):403-408. doi: 10.1126/science.abg3904.
The nonlinear scaling of complexity with the increased number of components in integrated photonics is a major obstacle impeding large-scale, phase-locked laser arrays. Here, we develop a higher-dimensional supersymmetry formalism for precise mode control and nonlinear power scaling. Our supersymmetric microlaser arrays feature phase-locked coherence and synchronization of all of the evanescently coupled microring lasers-collectively oscillating in the fundamental transverse supermode-which enables high-radiance, small-divergence, and single-frequency laser emission with a two-orders-of-magnitude enhancement in energy density. We also demonstrate the feasibility of structuring high-radiance vortex laser beams, which enhance the laser performance by taking full advantage of spatial degrees of freedom of light. Our approach provides a route for designing large-scale integrated photonic systems in both classical and quantum regimes.
集成光子学中随着组件数量增加复杂性的非线性缩放是阻碍大规模锁相激光阵列发展的主要障碍。在此，我们开发了一种用于精确模式控制和非线性功率缩放的高维超对称形式体系。我们的超对称微激光阵列具有锁相相干性以及所有倏逝耦合微环激光器的同步性——这些微环激光器在基本横向超模式下集体振荡——这使得能够实现高辐射、小发散和单频激光发射，能量密度提高了两个数量级。我们还展示了构建高辐射涡旋激光束的可行性，该激光束通过充分利用光的空间自由度来提高激光性能。我们的方法为在经典和量子领域设计大规模集成光子系统提供了一条途径。
