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17 September 2018 Manipulation and steering of hyperbolic surface polaritons in hexagonal boron nitride (Conference Presentation)
Siyuan Dai, Mykhailo Tymchenko, Yafang Yang, Qiong Ma, Marta Pita-Vidal, Kenji Watanabe, Takashi Taniguchi, Pablo Jarillo-Herrero, Michael M. Fogler, Andrea Alù, Dmitri N. Basov
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Proceedings Volume 10725, Low-Dimensional Materials and Devices 2018; 107250I (2018) https://doi.org/10.1117/12.2323346
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States
Abstract
Hexagonal boron nitride (hBN) is a natural hyperbolic material that supports both volume-confined hyperbolic polaritons (HPs) and sidewall-confined hyperbolic surface polaritons (HSPs). In this work, we demonstrate efficient excitation, control and steering of HSPs in hBN through engineering the geometry and orientation of hBN sidewalls. By combining infrared (IR) nano-imaging and numerical simulations, we investigate the reflection, transmission and scattering of HSPs at the hBN corners with various apex angles. We show that the sidewall-confined nature of HSPs enables a high degree of control over their propagation by designing the geometry of hBN nanostructures.
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Siyuan Dai, Mykhailo Tymchenko, Yafang Yang, Qiong Ma, Marta Pita-Vidal, Kenji Watanabe, Takashi Taniguchi, Pablo Jarillo-Herrero, Michael M. Fogler, Andrea Alù, and Dmitri N. Basov "Manipulation and steering of hyperbolic surface polaritons in hexagonal boron nitride (Conference Presentation)", Proc. SPIE 10725, Low-Dimensional Materials and Devices 2018, 107250I (17 September 2018); https://doi.org/10.1117/12.2323346
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KEYWORDS
Polaritons
Boron
Infrared radiation
Nanoimaging
Nanostructures
Numerical simulations
Reflection
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