Broad-Spectral-Range Sustainability and Controllable Excitation of Hyperbolic Phonon Polaritons in $\alpha$-MoO3

Weikang Dong, Ruishi Qi, Tiansheng Liu +8

Hyperbolic phonon polaritons (HPhPs) in orthorhombic-phase molybdenum trioxide ($\alpha$-MoO3) show in-plane hyperbolicity, great wavelength compression and ultra-long lifetime, therefo…