期刊
OPTICS LETTERS
卷 45, 期 1, 页码 93-96出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.45.000093
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资金
- National Natural Science Foundation of China [11847230, 11904096, 61775055, 61835004]
- China Postdoctoral Science Foundation [2018M642967]
Here we study the possibility to achieve polarization-independent optical absorption in stacked anisotropic 2D material nanostructures (NSs). Focusing on black phosphorus, we demonstrate that by crossly stacking even-layered NSs, surface plasmons resonant in the two lattice directions are complementary excited, leading to polarization-independent absorption at any layer distance. This property is numerically validated using full electromagnetic simulations and theoretically predicted by a two-particle model. Our proposal can open up the possibility of anisotropic 2D materials to develop polarization-independent plasmon devices such as sensors and absorbers. (C) 2019 Optical Society of America
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