#figure(
  image("/画图/弱极性不同方向偏移/embed.svg"),
  caption: [
    (a) Phonon dispersion of 4H-SiC along the A–#sym.Gamma–K high-symmetry path.
      Gray lines represent negligible-polar phonon modes,
      while colored lines indicate strong-polar phonon modes.
    (b) Magnified view of the boxed region in (a).
      The orange dashed lines mark the phonon wavevectors involved in Raman scattering
        with incident light along the z- and y-directions.
  ],
  placement: none
)<fig-nopo-diff>