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Abstract
We propose and numerically demonstrate that the phenomena of coherent perfect absorption, invisibility, and lasing can be simultaneously realized in a composite structure with both lossy and gain components. The three distinct functions can be independently triggered by incident waves with different orbital angular momenta. For instance, a triple-layer cylinder is demonstrated to simultaneously achieve perfect absorption, invisibility, and lasing under cylindrical monopolar, dipolar, and quadrupolar incidence, respectively. This Letter demonstrates that total attenuation, elimination of scattering, and great amplification can all be constructed in a single non-Hermitian photonic device, which utilizes the orbital angular momentum as a controlling mechanism for customized functions.
© 2020 Optical Society of America
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Ping Bai, Jie Luo, Hongchen Chu, Weixin Lu, and Yun Lai, "Non-Hermitian photonics for coherent perfect absorbtion, invisibility, and lasing with different orbital angular momenta: publisher’s note," Opt. Lett. 46, 4336-4336 (2021)https://opg.optica.org/ol/abstract.cfm?uri=ol-46-17-4336
13 July 2021: A typographical correction was made to the author listing.
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