Ultra-thin curved visible microdisk lasers with three-dimensional whispering gallery modes
Ultra-thin curved visible microdisk lasers with three-dimensional whispering gallery modes
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DOI：
10.1515/nanoph-2020-0242
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发表时间：
2020-07
期刊：
影响因子：
7.5
通讯作者：
Taojie Zhou;K. Ng;Xiankai Sun;Zhaoyu Zhang
中科院分区：
文献类型：
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作者：
Taojie Zhou;K. Ng;Xiankai Sun;Zhaoyu Zhang
微盘激光器是光子集成电路(PICS)中的重要器件，其回音廊模式(WGM)通常被限制在二维平板内。在这里，由于湿法腐蚀量子阱的应变弛豫，我们提出了具有单模激光发射和高品质因数∼17,000的超薄弯曲可见微盘激光器，与传统的平面内WGMS相比，它实现了WGMS的三维空间强度分布，并为受限光子提供了额外的自由度。具有WGMS三维空间轮廓的曲面微盘激光器可能在柔性和多能级光子源中提供有吸引力的应用。
Abstract Microdisk lasers are important components in photonic integrated circuits (PICs), of which the whispering gallery modes (WGMs) are usually confined within a two-dimensional (2D) planar slab. Here, owing to the strain relaxation of quantum wells by wet-etching method, we present ultra-thin curved visible microdisk lasers with single-mode lasing emission and a high quality factor of ∼17,000, which enable a 3D spatial intensity distribution of WGMs and provide an extra degree of freedom for the confined photons compared with the conventional 2D in-plane WGMs. The curved microdisk lasers with a 3D spatial profile of WGMs may provide attractive applications in flexible and multilevel photon sources for the PICs.