A new photonics study reveals a novel phenomenon wherein photoluminescence emissions exhibit high momentum two-dimensional propagation facilitated by coupling with surface lattice resonances (SLRs) in nanostructured materials. Through the hybridization of plasmonic oscillations and diffractive photonic modes in periodic nanoparticle arrays, researchers achieved unprecedented control over directional light emission at the nanoscale. These sharp spectral resonances enhance electromagnetic fields and enable manipulation of photon momentum, advancing nanophotonic device engineering. Such innovations promise impactful applications in optical sensing, quantum communications, and photovoltaic efficiency improvements.