Ha-Reem Kim, Min-Soo Hwang, D. Smirnova, Kwang-Yong Jeong, Y. Kivshar, Hong-Gyu Park
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Lasing from Multipolar Modes of Topological Corner States
We demonstrate lasing action from corner states in nanophotonic topological structures. We identify multipole corner modes with distinct emission profiles via hyperspectral imaging and discern signatures of non-Hermitian radiative coupling of the topological states.
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