a Artistic representation of the HgTe QD layer coated above the laser-printed Au nanobump array. b Side-view (view angle of 45°) SEM image showing the Au nanobump array printed at a 1-μm pitch (scale bar corresponds to 1?μm). A close-up SEM image on the top inset demonstrates the difference between the period and the "effective" period of the nanobump array. The bottom inset shows a photograph of two large-scale (3?×?9 mm2) nanobump arrays produced on the glass-supported Au film. c Typical Fourier transform infrared (FTIR) reflection spectrum of the plasmonic nanobump array printed at a 1?μm pitch (green curve). The contribution of the localized surface plasmon resonance (LSPR) of the isolated nanobumps of a given shape is shown by the orange dashed curve. FLPR denotes the first-order lattice plasmon resonance. The inset provides the distribution of the z-component of the EM field (Ez/E0) calculated 50?nm above the smooth Au film surface at 1480?nm wavelength. Circles indicate the nanobump positions. The details related to the calculations of the LSPRs and FLPRs are provided in the Supporting Information. d Side-view (view angle of 70°) SEM image of the cross-section of the nanobump (scale bar is 200?nm). e, f Calculated EM-field intensity distribution (E2/E02) near the isolated nanobump (in the xz plane) and 50?nm above the smooth Au film level (in the xy plane) at an 880?nm pump wavelength (scale bars in e, f are 200, 1000?nm, respectively).