Helicity-selective Raman scattering from in-plane anisotropic α-MoO3

  title={Helicity-selective Raman scattering from in-plane anisotropic $\alpha$-MoO3},
  author={Shahzad Akhtar Ali and Abdullah Irfan and Aishani Mazumder and Sivacarendran Balendhran and Taimur Ahmed and Sumeet Walia and Ata Ulhaq},
  journal={Applied Physics Letters},
Hyperbolic crystals like α-MoO3 can support large wavevectors and photon density as compared to the commonly used dielectric crystals, which makes them a highly desirable platform for compact photonic devices. The extreme anisotropy of the dielectric constant in these crystals is intricately linked with the anisotropic character of the phonons, which along with photon confinement leads to the rich physics of phonon polaritons. However, the chiral nature of phonons in these hyperbolic crystals… 

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