A transverse mim lattice lattice plasmonic absorber
A plasmon and absorber technology, applied in the field of micro-nano optics, can solve the problems of confinement enhancement and short plasma duration, and achieve the effects of strong local electric field enhancement, high quality factor and absorption coefficient, and simple structure
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[0024] The present invention will be further explained below in conjunction with the accompanying drawings and this embodiment.
[0025] figure 1 Shown is a schematic diagram of the three-dimensional structure of the transverse MIM lattice lattice plasmon absorber. Including a dielectric substrate 2 with a refractive index n=1.52, two gold cuboid blocks facing each other and each group of metal nanoparticles 1 composed of a layer of medium (air) in between, the length of the two gold cuboid blocks is parallel to the Y axis, and the width is parallel to the Y axis. x-axis. Each group of metal nanoparticles is distributed periodically along the X-axis and Y-axis on the medium substrate to form a metal nanoparticle array, and the thickness of the medium substrate in the present invention only needs to meet the working conditions. The incident light is a plane wave, the wave vector k is in the YZ plane and the angle between the incident direction and the Z axis is θ, and the pol...
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