Showing physics.opticsShow all
2 papers · 1 filter
physics.optics2025
Non-uniform wave momentum bandgap in biaxial anisotropic photonic time crystals
Junhua Dong, Sihao Zhang, Huan He +2
Photonic time crystals (PTCs) host momentum bandgaps enabling intriguing non-resonant light amplification in propagating waves, but opening substantial bandgaps demands refractive…
physics.optics2024
Longitudinal optical phonons in photonic time crystals containing a stationary charge
Sihao Zhang, Junhua Dong, Huanan Li +2
Lorentzian-type media support optical phonons that oscillate with longitudinal polarization parallel to the wave direction, at a wave vector-independent frequency at which the perm…