Output power and beam quality are the two main bottlenecks for semiconductor lasers—the favourite light sources in countless applications because of their compactness, high efficiency and cheapness. Both limitations are due to the fact that it becomes increasingly harder to stabilize a single-mode laser over a broader chip area without multi-mode operations. Here we address this fundamental difficulty with the Dirac-vortex topological cavity¹, which offers the optimal single-mode selection in two dimensions. Our topological-cavity surface-emitting laser (TCSEL) exhibits 10 W peak power, sub-1° divergence angle and 60 dB side-mode suppression, among the best-reported performance ever at 1,550 nm—the most important telecommunication and eye-safe wavelength where high-performance surface emitters have always been difficult to make². We also demonstrate the multi-wavelength capability of two-dimensional TCSEL arrays that are not generally available for commercial lasers^2,3. TCSEL, as a new-generation high-brightness surface emitter, can be directly extended to any other wavelength range and is promising for an extremely wide variety of uses.

输出功率和光束质量是半导体激光器的两个主要瓶颈——半导体激光器因其紧凑、高效和廉价而成为无数应用中最受欢迎的光源。这两个限制都是由于这样一个事实，即在没有多模操作的情况下，在更宽的芯片区域上稳定单模激光器变得越来越困难。^{在这里，我们用狄拉克涡旋拓扑腔1}解决了这个基本难题，它提供了二维的最佳单模选择。我们的拓扑腔面发射激光器 (TCSEL) 具有 10 W 的峰值功率、低于 1° 的发散角和 60 dB 的边模抑制，在 1,550 nm（最重要的电信和人眼安全领域）的性能报告中名列前茅高性能表面发射器一直难以制造的波长² . 我们还展示了二维 TCSEL 阵列的多波长能力，这些阵列通常不适用于商用激光器^2,3。TCSEL作为新一代高亮度面发射器，可以直接扩展到任何其他波长范围，具有极其广泛的应用前景。