Proceedings Article | 3 October 2022
KEYWORDS: Photonics, Transition metals, Mid-IR, Waveguides, Polaritons, Phonons, Optoelectronics, Boron, Solid state electronics, Semiconductors
Layered van der Waals materials possess intriguing optical and electronic properties [1-3]. In particular, TMDCs near their excitonic resonance exhibit high index in the visible and near-infrared bands [4-6]. Moreover, hBN shows very large positive real material permittivity in the mid-infrared bands due to sharp phonon polaritonic resonance [7,8]. In this work, we explore the high refractive index photonics enabled by these materials. We examine light guiding performance in structures made of TMDCs and hBN at different wavelength ranges and find that due to their high index, it is possible to achieve efficient optical confinement within atomically thin channels.
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