Deflection of electromagnetic waves by pseudogravity in distorted photonic crystals Articles uri icon

publication date

  • September 2023


  • 3, 033522


  • 108

International Standard Serial Number (ISSN)

  • 2469-9926

Electronic International Standard Serial Number (EISSN)

  • 2469-9934


  • We demonstrate electromagnetic waves following a gravitational field using a photonic crystal. We introduce spatially distorted photonic crystals (DPCs) capable of deflecting light waves owing to their pseudogravity caused by lattice distortion. We experimentally verify the phenomenon in the terahertz range using a silicon DPC. Pseudogravity caused by lattice distortion reveals alternative approaches to achieve on-chip trajectory control of light propagation in PCs.


  • Electronics


  • phononic crystals; techniques; band structure methods; finite-difference time-domain method; terahertz sources