Ultrafast Laser Manipulation of In‐Lattice Plasmonic Nanoparticles

• DOI: 10.1002/advs.202402840
• Publication Date: 2024-07-18T12:05:58Z
• Authors: Han Zhu; Lingrui Chu; Hengyue Lv; Qingchuan Ye; Saulius Juodkazis; Feng Chen
• Keywords: Plasmonic Nanoparticles

Plasmonic nanoparticles enable manipulation and enhancement of light fields at deep subwavelength scales, leading to structures devices for diverse applications in optics. Despite hybrid plasmonic materials display remarkable optical properties due interactions between components nanoproximity, scalable production nanostructures within a single-crystalline matrix achieve an ideal plasmon-crystal interface remains challenging. Here, novel approach is presented realize efficient in-lattice nanoparticles. Employing ultrafast-laser-driven nanolithography, metallic with controllable morphology are precisely defined the crystalline lattice yttrium aluminum garnet (YAG) crystal. Through direct ion implantation, material composed embedded sub-surface amorphous YAG layer created. Subsequently, femtosecond laser pulses guide formation reshaping from into along direction propagation, facilitated by plasmon-mediated evolution energy deposition. By tailoring resonance modes optimizing coupling structured particle assemblies, range including polarization-dependent absorption nonlinearity, photoluminescence, structural color generation demonstrated. This research introduces new fabricating advanced featuring nanostructures, paving way development functional photonic devices.