Surface-enhanced　Raman　scattering　(SERS)　enables　trace-detection　for　biosensing　and　environmental　monitoring.　Optimized　enhancement　of　SERS　can　be　achieved　when　the　energy　of　the　localized　surface　plasmon　resonance　(LSPR)　is　close　to　the　energy　of　the　Raman　excitation　wavelength.　The　LSPR　can　be　tuned　using　a　plasmonic　superstructure　array　with　controlled　periods.　In　this　paper,　we　develop　a　new　technique　based　on　laser　near-field　reduction　to　fabricate　a　superstructure　array,　which　provides　distinct　features　in　the　formation　of　periodic　structures　with　hollow　nanoclusters　and　flexible　control　of　the　LSPR　in　fewer　steps　than　current　techniques.　Fabrication　involves　irradiation　of　a　continuous　wave　laser　or　femtosecond　laser　onto　a　monolayer　of　self-assembled　silica　microspheres　to　grow　silver　nanoparticles　along　the　silica　microsphere　surfaces　by　laser　near-field　reduction.　The　LSPR　of　superstructure　array　can　be　flexibly　tuned　to　match　the　Raman　excitation　wavelengths　from　the　visible　to　the　infrared　regions　using　different　diameters　of　silica　microspheres.　The　unique　nanostructure　formed　can　contribute　to　an　increase　in　the　sensitivity　of　SERS　sensing.　The　fabricated　superstructure　array　thus　offers　superior　characteristics　for　the　quantitative　analysis　of　fluorescent　perfluorooctanoic　acid　with　a　wide　detection　range　from　11　ppb　to　400　ppm.