期刊
PHOTONICS RESEARCH
卷 10, 期 10, 页码 B14-B22出版社
CHINESE LASER PRESS
DOI: 10.1364/PRJ.463611
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资金
- National Natural Science Foundation of China [92050102, 11874311]
- National Key Research and Development Program of China [2020YFA0710100]
- Fundamental Research Funds for the Central Universities [20720220033, 20720200074, 20720220134]
- Shenzhen Science and Technology Program [JCYJ20210324121610028]
- China Scholarship Council [201906310019]
- Advanced Research and Technology Innovation Centre (ARTIC), National University of Singapore [A-0005947-16-00]
This paper proposes a new Pythagorean theorem for manipulating hyperbolic waves and presents experimental results on manipulating hyperbolic waves in nanoscale and polaritons.
Transformation optics (TO) facilitates flexible designs of spatial modulation of optical materials via coordinate transformations, thus, enabling on-demand manipulations of electromagnetic waves. However, the application of TO theory in control of hyperbolic waves remains elusive due to the spatial metric signature transition from (+, +) to (-, +) of a two-dimensional hyperbolic geometry. Here, we proposed a distinct Pythagorean theorem, which leads to establishing an anisotropic Fermat's principle. It helps to construct anisotropic geometries and is a powerful tool for manipulating hyperbolic waves at the nanoscale and polaritons. Making use of absolute instruments, the excellent collimating and focusing behaviors of naturally in-plane hyperbolic polaritons in van der Waals alpha a-MoO3 layers are demonstrated, which opens up a new way for polaritons manipulation. (c) 2022 Chinese Laser Press
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