Spontaneous emission modulation in biaxial hyperbolic van der Waals material

  title={Spontaneous emission modulation in biaxial hyperbolic van der Waals material},
  author={Haotuo Liu and Yang Hu and Qing Ai and Ming Xie and Xiaohu Wu},
  journal={Journal of Applied Physics},
As a natural van der Waals crystal, α-MoO3 has excellent in-plane hyperbolic properties and essential nanophotonics applications. However, its tunable properties are generally neglected. Here, we achieve effective modulation of spontaneous emission (SE) from a single-layer flat plate by changing the crystal directions. Numerical results and theoretical analysis show that α-MoO3 exhibits good tunability when the crystal directions of α-MoO3 are different in y– z or x– y planes. A modulation… 

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